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CERTFR-2025-AVI-0892
Vulnerability from certfr_avis - Published: 2025-10-17 - Updated: 2025-10-17
De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Certaines d'entre elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Ubuntu 20.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 24.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 25.04",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 18.04 ESM",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
},
{
"description": "Ubuntu 22.04 LTS",
"product": {
"name": "Ubuntu",
"vendor": {
"name": "Ubuntu",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2025-22003",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22003"
},
{
"name": "CVE-2025-21975",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21975"
},
{
"name": "CVE-2025-21980",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21980"
},
{
"name": "CVE-2025-21889",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21889"
},
{
"name": "CVE-2025-21937",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21937"
},
{
"name": "CVE-2025-22017",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22017"
},
{
"name": "CVE-2025-21881",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21881"
},
{
"name": "CVE-2025-21951",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21951"
},
{
"name": "CVE-2025-21941",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21941"
},
{
"name": "CVE-2025-21872",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21872"
},
{
"name": "CVE-2025-21922",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21922"
},
{
"name": "CVE-2025-21796",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21796"
},
{
"name": "CVE-2024-49950",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-49950"
},
{
"name": "CVE-2024-35849",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-35849"
},
{
"name": "CVE-2025-22009",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22009"
},
{
"name": "CVE-2025-21904",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21904"
},
{
"name": "CVE-2025-22004",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22004"
},
{
"name": "CVE-2025-21929",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21929"
},
{
"name": "CVE-2025-38500",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38500"
},
{
"name": "CVE-2025-21977",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21977"
},
{
"name": "CVE-2025-21918",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21918"
},
{
"name": "CVE-2025-21948",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21948"
},
{
"name": "CVE-2025-21914",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21914"
},
{
"name": "CVE-2025-21995",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21995"
},
{
"name": "CVE-2025-21915",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21915"
},
{
"name": "CVE-2024-58090",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-58090"
},
{
"name": "CVE-2025-21972",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21972"
},
{
"name": "CVE-2025-21986",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21986"
},
{
"name": "CVE-2025-21961",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21961"
},
{
"name": "CVE-2024-57996",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-57996"
},
{
"name": "CVE-2025-21946",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21946"
},
{
"name": "CVE-2025-21982",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21982"
},
{
"name": "CVE-2025-21936",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21936"
},
{
"name": "CVE-2025-21909",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21909"
},
{
"name": "CVE-2025-21880",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21880"
},
{
"name": "CVE-2025-21959",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21959"
},
{
"name": "CVE-2025-37889",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-37889"
},
{
"name": "CVE-2025-21981",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21981"
},
{
"name": "CVE-2025-21910",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21910"
},
{
"name": "CVE-2025-22014",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22014"
},
{
"name": "CVE-2025-21911",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21911"
},
{
"name": "CVE-2025-21996",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21996"
},
{
"name": "CVE-2025-37785",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-37785"
},
{
"name": "CVE-2025-21917",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21917"
},
{
"name": "CVE-2025-21957",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21957"
},
{
"name": "CVE-2025-21999",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21999"
},
{
"name": "CVE-2025-21997",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21997"
},
{
"name": "CVE-2025-21992",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21992"
},
{
"name": "CVE-2025-21978",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21978"
},
{
"name": "CVE-2025-21947",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21947"
},
{
"name": "CVE-2025-21913",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21913"
},
{
"name": "CVE-2025-21966",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21966"
},
{
"name": "CVE-2025-21970",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21970"
},
{
"name": "CVE-2025-21890",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21890"
},
{
"name": "CVE-2025-21916",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21916"
},
{
"name": "CVE-2025-21925",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21925"
},
{
"name": "CVE-2025-21927",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21927"
},
{
"name": "CVE-2025-21883",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21883"
},
{
"name": "CVE-2025-21898",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21898"
},
{
"name": "CVE-2025-37797",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-37797"
},
{
"name": "CVE-2025-21908",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21908"
},
{
"name": "CVE-2024-49924",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-49924"
},
{
"name": "CVE-2025-21895",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21895"
},
{
"name": "CVE-2025-22005",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22005"
},
{
"name": "CVE-2025-21935",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21935"
},
{
"name": "CVE-2025-21888",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21888"
},
{
"name": "CVE-2025-22010",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22010"
},
{
"name": "CVE-2025-21976",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21976"
},
{
"name": "CVE-2025-21950",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21950"
},
{
"name": "CVE-2025-22001",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22001"
},
{
"name": "CVE-2025-21899",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21899"
},
{
"name": "CVE-2025-21994",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21994"
},
{
"name": "CVE-2025-21928",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21928"
},
{
"name": "CVE-2025-22007",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22007"
},
{
"name": "CVE-2025-21934",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21934"
},
{
"name": "CVE-2025-22011",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22011"
},
{
"name": "CVE-2025-38617",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38617"
},
{
"name": "CVE-2025-38083",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38083"
},
{
"name": "CVE-2025-21912",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21912"
},
{
"name": "CVE-2025-21903",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21903"
},
{
"name": "CVE-2025-21956",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21956"
},
{
"name": "CVE-2025-21885",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21885"
},
{
"name": "CVE-2025-21877",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21877"
},
{
"name": "CVE-2025-38244",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38244"
},
{
"name": "CVE-2025-21878",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21878"
},
{
"name": "CVE-2025-37752",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-37752"
},
{
"name": "CVE-2025-21873",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21873"
},
{
"name": "CVE-2025-38477",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38477"
},
{
"name": "CVE-2025-38683",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38683"
},
{
"name": "CVE-2025-21926",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21926"
},
{
"name": "CVE-2025-21930",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21930"
},
{
"name": "CVE-2025-21892",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21892"
},
{
"name": "CVE-2025-21944",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21944"
},
{
"name": "CVE-2025-21905",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21905"
},
{
"name": "CVE-2024-38541",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-38541"
},
{
"name": "CVE-2025-21920",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21920"
},
{
"name": "CVE-2025-22016",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22016"
},
{
"name": "CVE-2025-37756",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-37756"
},
{
"name": "CVE-2025-21955",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21955"
},
{
"name": "CVE-2025-38618",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38618"
},
{
"name": "CVE-2025-21891",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21891"
},
{
"name": "CVE-2025-22013",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22013"
},
{
"name": "CVE-2025-21979",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21979"
},
{
"name": "CVE-2025-21963",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21963"
},
{
"name": "CVE-2025-38350",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38350"
},
{
"name": "CVE-2025-21960",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21960"
},
{
"name": "CVE-2025-21967",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21967"
},
{
"name": "CVE-2024-50073",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-50073"
},
{
"name": "CVE-2025-21945",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21945"
},
{
"name": "CVE-2025-22008",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22008"
},
{
"name": "CVE-2025-21969",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21969"
},
{
"name": "CVE-2025-21894",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21894"
},
{
"name": "CVE-2025-21919",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21919"
},
{
"name": "CVE-2023-52757",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-52757"
},
{
"name": "CVE-2023-52975",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-52975"
},
{
"name": "CVE-2025-21968",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21968"
},
{
"name": "CVE-2025-21991",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21991"
},
{
"name": "CVE-2025-21875",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21875"
},
{
"name": "CVE-2025-22015",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-22015"
},
{
"name": "CVE-2025-21962",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21962"
},
{
"name": "CVE-2025-21924",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21924"
},
{
"name": "CVE-2025-21964",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-21964"
}
],
"initial_release_date": "2025-10-17T00:00:00",
"last_revision_date": "2025-10-17T00:00:00",
"links": [],
"reference": "CERTFR-2025-AVI-0892",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2025-10-17T00:00:00.000000"
}
],
"risks": [
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "D\u00e9ni de service"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux d\u0027Ubuntu. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es, une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux d\u0027Ubuntu",
"vendor_advisories": [
{
"published_at": "2025-10-13",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7820-1",
"url": "https://ubuntu.com/security/notices/USN-7820-1"
},
{
"published_at": "2025-10-13",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7819-1",
"url": "https://ubuntu.com/security/notices/USN-7819-1"
},
{
"published_at": "2025-10-14",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7821-1",
"url": "https://ubuntu.com/security/notices/USN-7821-1"
},
{
"published_at": "2025-10-15",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7801-3",
"url": "https://ubuntu.com/security/notices/USN-7801-3"
},
{
"published_at": "2025-10-14",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7810-2",
"url": "https://ubuntu.com/security/notices/USN-7810-2"
},
{
"published_at": "2025-10-14",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7810-3",
"url": "https://ubuntu.com/security/notices/USN-7810-3"
},
{
"published_at": "2025-10-13",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7796-4",
"url": "https://ubuntu.com/security/notices/USN-7796-4"
},
{
"published_at": "2025-10-14",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7808-2",
"url": "https://ubuntu.com/security/notices/USN-7808-2"
},
{
"published_at": "2025-10-14",
"title": "Bulletin de s\u00e9curit\u00e9 Ubuntu USN-7791-4",
"url": "https://ubuntu.com/security/notices/USN-7791-4"
}
]
}
CVE-2023-52757 (GCVE-0-2023-52757)
Vulnerability from cvelistv5 – Published: 2024-05-21 15:30 – Updated: 2026-05-23 15:26
VLAI
EPSS
VEX
Title
smb: client: fix potential deadlock when releasing mids
Summary
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix potential deadlock when releasing mids
All release_mid() callers seem to hold a reference of @mid so there is
no need to call kref_put(&mid->refcount, __release_mid) under
@server->mid_lock spinlock. If they don't, then an use-after-free bug
would have occurred anyways.
By getting rid of such spinlock also fixes a potential deadlock as
shown below
CPU 0 CPU 1
------------------------------------------------------------------
cifs_demultiplex_thread() cifs_debug_data_proc_show()
release_mid()
spin_lock(&server->mid_lock);
spin_lock(&cifs_tcp_ses_lock)
spin_lock(&server->mid_lock)
__release_mid()
smb2_find_smb_tcon()
spin_lock(&cifs_tcp_ses_lock) *deadlock*
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:37 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
7b71843fa7028475b052107664cbe120156a2cfc , < 99f476e27aad5964ab13777d84fda67d1356dec1
(git)
Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < ce49569079a9d4cad26c0f1d4653382fd9a5ca7a (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < 9eb44db68c5b7f5aa22b8fc7de74a3e2e08d1f29 (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < b9bb9607b1fc12fca51f5632da25b36975f599bf (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < c1a5962f1462b64fe7b69f20a4b6af8067bc2d26 (git) Affected: 7b71843fa7028475b052107664cbe120156a2cfc , < e6322fd177c6885a21dd4609dc5e5c973d1a2eb7 (git) Affected: 9871dea42034ee6e73bb2b97ba0284d3d462b230 (git) Affected: 5.4.6 , < 5.5 (semver) |
|
| Linux | Linux |
Affected:
5.5
Unaffected: 0 , < 5.5 (semver) Unaffected: 5.10.237 , ≤ 5.10.* (semver) Unaffected: 5.15.181 , ≤ 5.15.* (semver) Unaffected: 6.1.64 , ≤ 6.1.* (semver) Unaffected: 6.5.13 , ≤ 6.5.* (semver) Unaffected: 6.6.3 , ≤ 6.6.* (semver) Unaffected: 6.7 , ≤ * (original_commit_for_fix) |
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CVE-2023-52975 (GCVE-0-2023-52975)
Vulnerability from cvelistv5 – Published: 2025-03-27 16:43 – Updated: 2026-08-05 09:12
VLAI
EPSS
VEX
Title
scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress
Summary
In the Linux kernel, the following vulnerability has been resolved:
scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress
Bug report and analysis from Ding Hui.
During iSCSI session logout, if another task accesses the shost ipaddress
attr, we can get a KASAN UAF report like this:
[ 276.942144] BUG: KASAN: use-after-free in _raw_spin_lock_bh+0x78/0xe0
[ 276.942535] Write of size 4 at addr ffff8881053b45b8 by task cat/4088
[ 276.943511] CPU: 2 PID: 4088 Comm: cat Tainted: G E 6.1.0-rc8+ #3
[ 276.943997] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020
[ 276.944470] Call Trace:
[ 276.944943] <TASK>
[ 276.945397] dump_stack_lvl+0x34/0x48
[ 276.945887] print_address_description.constprop.0+0x86/0x1e7
[ 276.946421] print_report+0x36/0x4f
[ 276.947358] kasan_report+0xad/0x130
[ 276.948234] kasan_check_range+0x35/0x1c0
[ 276.948674] _raw_spin_lock_bh+0x78/0xe0
[ 276.949989] iscsi_sw_tcp_host_get_param+0xad/0x2e0 [iscsi_tcp]
[ 276.951765] show_host_param_ISCSI_HOST_PARAM_IPADDRESS+0xe9/0x130 [scsi_transport_iscsi]
[ 276.952185] dev_attr_show+0x3f/0x80
[ 276.953005] sysfs_kf_seq_show+0x1fb/0x3e0
[ 276.953401] seq_read_iter+0x402/0x1020
[ 276.954260] vfs_read+0x532/0x7b0
[ 276.955113] ksys_read+0xed/0x1c0
[ 276.955952] do_syscall_64+0x38/0x90
[ 276.956347] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 276.956769] RIP: 0033:0x7f5d3a679222
[ 276.957161] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 32 c0 0b 00 e8 a5 fe 01 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 <48> 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89 54 24
[ 276.958009] RSP: 002b:00007ffc864d16a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[ 276.958431] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f5d3a679222
[ 276.958857] RDX: 0000000000020000 RSI: 00007f5d3a4fe000 RDI: 0000000000000003
[ 276.959281] RBP: 00007f5d3a4fe000 R08: 00000000ffffffff R09: 0000000000000000
[ 276.959682] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000020000
[ 276.960126] R13: 0000000000000003 R14: 0000000000000000 R15: 0000557a26dada58
[ 276.960536] </TASK>
[ 276.961357] Allocated by task 2209:
[ 276.961756] kasan_save_stack+0x1e/0x40
[ 276.962170] kasan_set_track+0x21/0x30
[ 276.962557] __kasan_kmalloc+0x7e/0x90
[ 276.962923] __kmalloc+0x5b/0x140
[ 276.963308] iscsi_alloc_session+0x28/0x840 [scsi_transport_iscsi]
[ 276.963712] iscsi_session_setup+0xda/0xba0 [libiscsi]
[ 276.964078] iscsi_sw_tcp_session_create+0x1fd/0x330 [iscsi_tcp]
[ 276.964431] iscsi_if_create_session.isra.0+0x50/0x260 [scsi_transport_iscsi]
[ 276.964793] iscsi_if_recv_msg+0xc5a/0x2660 [scsi_transport_iscsi]
[ 276.965153] iscsi_if_rx+0x198/0x4b0 [scsi_transport_iscsi]
[ 276.965546] netlink_unicast+0x4d5/0x7b0
[ 276.965905] netlink_sendmsg+0x78d/0xc30
[ 276.966236] sock_sendmsg+0xe5/0x120
[ 276.966576] ____sys_sendmsg+0x5fe/0x860
[ 276.966923] ___sys_sendmsg+0xe0/0x170
[ 276.967300] __sys_sendmsg+0xc8/0x170
[ 276.967666] do_syscall_64+0x38/0x90
[ 276.968028] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 276.968773] Freed by task 2209:
[ 276.969111] kasan_save_stack+0x1e/0x40
[ 276.969449] kasan_set_track+0x21/0x30
[ 276.969789] kasan_save_free_info+0x2a/0x50
[ 276.970146] __kasan_slab_free+0x106/0x190
[ 276.970470] __kmem_cache_free+0x133/0x270
[ 276.970816] device_release+0x98/0x210
[ 276.971145] kobject_cleanup+0x101/0x360
[ 276.971462] iscsi_session_teardown+0x3fb/0x530 [libiscsi]
[ 276.971775] iscsi_sw_tcp_session_destroy+0xd8/0x130 [iscsi_tcp]
[ 276.972143] iscsi_if_recv_msg+0x1bf1/0x2660 [scsi_transport_iscsi]
[ 276.972485] iscsi_if_rx+0x198/0x4b0 [scsi_transport_iscsi]
[ 276.972808] netlink_unicast+0x4d5/0x7b0
[ 276.973201] netlink_sendmsg+0x78d/0xc30
[ 276.973544] sock_sendmsg+0xe5/0x120
[ 276.973864] ____sys_sendmsg+0x5fe/0x860
[ 276.974248] ___sys_
---truncated---
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-27 16:59 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 , < 0af745fddefbd56198f4f35eb309215ee5f9e21e
(git)
Affected: a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 , < 17b738590b97fb3fc287289971d1519ff9b875a1 (git) Affected: a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 , < 8859687f5b242c0b057461df0a9ff51d5500783b (git) Affected: a79af8a64d395bd89de8695a5ea5e1a7f01f02a8 , < 6f1d64b13097e85abda0f91b5638000afc5f9a06 (git) |
|
| Linux | Linux |
Affected:
2.6.39
Unaffected: 0 , < 2.6.39 (semver) Unaffected: 5.10.248 , ≤ 5.10.* (semver) Unaffected: 5.15.93 , ≤ 5.15.* (semver) Unaffected: 6.1.11 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix) |
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "2.6.39"
},
{
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"status": "unaffected",
"version": "0",
"versionType": "semver"
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"version": "5.10.248",
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{
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"status": "unaffected",
"version": "5.15.93",
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{
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"status": "unaffected",
"version": "6.1.11",
"versionType": "semver"
},
{
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"status": "unaffected",
"version": "6.2",
"versionType": "original_commit_for_fix"
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}
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"vulnerable": true
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{
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{
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{
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"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress\n\nBug report and analysis from Ding Hui.\n\nDuring iSCSI session logout, if another task accesses the shost ipaddress\nattr, we can get a KASAN UAF report like this:\n\n[ 276.942144] BUG: KASAN: use-after-free in _raw_spin_lock_bh+0x78/0xe0\n[ 276.942535] Write of size 4 at addr ffff8881053b45b8 by task cat/4088\n[ 276.943511] CPU: 2 PID: 4088 Comm: cat Tainted: G E 6.1.0-rc8+ #3\n[ 276.943997] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 11/12/2020\n[ 276.944470] Call Trace:\n[ 276.944943] \u003cTASK\u003e\n[ 276.945397] dump_stack_lvl+0x34/0x48\n[ 276.945887] print_address_description.constprop.0+0x86/0x1e7\n[ 276.946421] print_report+0x36/0x4f\n[ 276.947358] kasan_report+0xad/0x130\n[ 276.948234] kasan_check_range+0x35/0x1c0\n[ 276.948674] _raw_spin_lock_bh+0x78/0xe0\n[ 276.949989] iscsi_sw_tcp_host_get_param+0xad/0x2e0 [iscsi_tcp]\n[ 276.951765] show_host_param_ISCSI_HOST_PARAM_IPADDRESS+0xe9/0x130 [scsi_transport_iscsi]\n[ 276.952185] dev_attr_show+0x3f/0x80\n[ 276.953005] sysfs_kf_seq_show+0x1fb/0x3e0\n[ 276.953401] seq_read_iter+0x402/0x1020\n[ 276.954260] vfs_read+0x532/0x7b0\n[ 276.955113] ksys_read+0xed/0x1c0\n[ 276.955952] do_syscall_64+0x38/0x90\n[ 276.956347] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[ 276.956769] RIP: 0033:0x7f5d3a679222\n[ 276.957161] Code: c0 e9 b2 fe ff ff 50 48 8d 3d 32 c0 0b 00 e8 a5 fe 01 00 0f 1f 44 00 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 56 c3 0f 1f 44 00 00 48 83 ec 28 48 89 54 24\n[ 276.958009] RSP: 002b:00007ffc864d16a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000\n[ 276.958431] RAX: ffffffffffffffda RBX: 0000000000020000 RCX: 00007f5d3a679222\n[ 276.958857] RDX: 0000000000020000 RSI: 00007f5d3a4fe000 RDI: 0000000000000003\n[ 276.959281] RBP: 00007f5d3a4fe000 R08: 00000000ffffffff R09: 0000000000000000\n[ 276.959682] R10: 0000000000000022 R11: 0000000000000246 R12: 0000000000020000\n[ 276.960126] R13: 0000000000000003 R14: 0000000000000000 R15: 0000557a26dada58\n[ 276.960536] \u003c/TASK\u003e\n[ 276.961357] Allocated by task 2209:\n[ 276.961756] kasan_save_stack+0x1e/0x40\n[ 276.962170] kasan_set_track+0x21/0x30\n[ 276.962557] __kasan_kmalloc+0x7e/0x90\n[ 276.962923] __kmalloc+0x5b/0x140\n[ 276.963308] iscsi_alloc_session+0x28/0x840 [scsi_transport_iscsi]\n[ 276.963712] iscsi_session_setup+0xda/0xba0 [libiscsi]\n[ 276.964078] iscsi_sw_tcp_session_create+0x1fd/0x330 [iscsi_tcp]\n[ 276.964431] iscsi_if_create_session.isra.0+0x50/0x260 [scsi_transport_iscsi]\n[ 276.964793] iscsi_if_recv_msg+0xc5a/0x2660 [scsi_transport_iscsi]\n[ 276.965153] iscsi_if_rx+0x198/0x4b0 [scsi_transport_iscsi]\n[ 276.965546] netlink_unicast+0x4d5/0x7b0\n[ 276.965905] netlink_sendmsg+0x78d/0xc30\n[ 276.966236] sock_sendmsg+0xe5/0x120\n[ 276.966576] ____sys_sendmsg+0x5fe/0x860\n[ 276.966923] ___sys_sendmsg+0xe0/0x170\n[ 276.967300] __sys_sendmsg+0xc8/0x170\n[ 276.967666] do_syscall_64+0x38/0x90\n[ 276.968028] entry_SYSCALL_64_after_hwframe+0x63/0xcd\n[ 276.968773] Freed by task 2209:\n[ 276.969111] kasan_save_stack+0x1e/0x40\n[ 276.969449] kasan_set_track+0x21/0x30\n[ 276.969789] kasan_save_free_info+0x2a/0x50\n[ 276.970146] __kasan_slab_free+0x106/0x190\n[ 276.970470] __kmem_cache_free+0x133/0x270\n[ 276.970816] device_release+0x98/0x210\n[ 276.971145] kobject_cleanup+0x101/0x360\n[ 276.971462] iscsi_session_teardown+0x3fb/0x530 [libiscsi]\n[ 276.971775] iscsi_sw_tcp_session_destroy+0xd8/0x130 [iscsi_tcp]\n[ 276.972143] iscsi_if_recv_msg+0x1bf1/0x2660 [scsi_transport_iscsi]\n[ 276.972485] iscsi_if_rx+0x198/0x4b0 [scsi_transport_iscsi]\n[ 276.972808] netlink_unicast+0x4d5/0x7b0\n[ 276.973201] netlink_sendmsg+0x78d/0xc30\n[ 276.973544] sock_sendmsg+0xe5/0x120\n[ 276.973864] ____sys_sendmsg+0x5fe/0x860\n[ 276.974248] ___sys_\n---truncated---"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"lang": "en",
"value": "AV:L - The UAF is reached only via local paths: NETLINK_ISCSI session destroy (iscsiadm/iscsid) racing with a read of the host sysfs ipaddress attribute. iscsi_tcp is an initiator control/sysfs bug, not a remote PDU-processing path.\nAC:L - The attacker fully controls the sysfs-read side and can flood reads of the world-readable attribute; the commit shows the race is easily reproduced against concurrent logout, so success does not depend on conditions beyond attacker influence.\nPR:L - The use path is show_host_param_ISCSI_HOST_PARAM_IPADDRESS on an S_IRUGO sysfs attribute, so an ordinary local user (as in the KASAN report\u0027s cat task) can trigger the UAF when a session is torn down; CAP_SYS_ADMIN is required only for the iscsid teardown side, not for the unprivileged use.\nUI:N - No separate victim action is required; the attacker drives the sysfs reads, and session logout is performed by iscsid/the attacker as part of normal iscsi_tcp operation rather than a human UI step.\nS:U - This is a host-kernel slab UAF enabling local privilege escalation within the same kernel authority; it does not cross a VM, IOMMU, or other security boundary.\nC:H - Use-after-free of the iscsi_session object lets an attacker reclaim and control the freed object (including leadconn/sock-related state used by get_param), enabling arbitrary kernel information disclosure.\nI:H - The same reclaimable session UAF supports heap spraying and corruption of the reused object, yielding write/control-flow hijacking primitives suitable for privilege escalation.\nA:H - The UAF already faults in spin_lock_bh on the freed session (KASAN report) and can oops/panic the kernel even without a full exploit, so availability impact is High."
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CVE-2024-35849 (GCVE-0-2024-35849)
Vulnerability from cvelistv5 – Published: 2024-05-17 14:47 – Updated: 2026-05-12 11:52
VLAI
EPSS
VEX
Title
btrfs: fix information leak in btrfs_ioctl_logical_to_ino()
Summary
In the Linux kernel, the following vulnerability has been resolved:
btrfs: fix information leak in btrfs_ioctl_logical_to_ino()
Syzbot reported the following information leak for in
btrfs_ioctl_logical_to_ino():
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline]
BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x110 lib/usercopy.c:40
instrument_copy_to_user include/linux/instrumented.h:114 [inline]
_copy_to_user+0xbc/0x110 lib/usercopy.c:40
copy_to_user include/linux/uaccess.h:191 [inline]
btrfs_ioctl_logical_to_ino+0x440/0x750 fs/btrfs/ioctl.c:3499
btrfs_ioctl+0x714/0x1260
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl+0x261/0x450 fs/ioctl.c:890
__x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890
x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was created at:
__kmalloc_large_node+0x231/0x370 mm/slub.c:3921
__do_kmalloc_node mm/slub.c:3954 [inline]
__kmalloc_node+0xb07/0x1060 mm/slub.c:3973
kmalloc_node include/linux/slab.h:648 [inline]
kvmalloc_node+0xc0/0x2d0 mm/util.c:634
kvmalloc include/linux/slab.h:766 [inline]
init_data_container+0x49/0x1e0 fs/btrfs/backref.c:2779
btrfs_ioctl_logical_to_ino+0x17c/0x750 fs/btrfs/ioctl.c:3480
btrfs_ioctl+0x714/0x1260
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl+0x261/0x450 fs/ioctl.c:890
__x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:890
x64_sys_call+0x1883/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Bytes 40-65535 of 65536 are uninitialized
Memory access of size 65536 starts at ffff888045a40000
This happens, because we're copying a 'struct btrfs_data_container' back
to user-space. This btrfs_data_container is allocated in
'init_data_container()' via kvmalloc(), which does not zero-fill the
memory.
Fix this by using kvzalloc() which zeroes out the memory on allocation.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-05-23 19:26 UTC
Assigner
References
11 references
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
a542ad1bafc7df9fc16de8a6894b350a4df75572 , < 689efe22e9b5b7d9d523119a9a5c3c17107a0772
(git)
Affected: a542ad1bafc7df9fc16de8a6894b350a4df75572 , < 73db209dcd4ae026021234d40cfcb2fb5b564b86 (git) Affected: a542ad1bafc7df9fc16de8a6894b350a4df75572 , < 30189e54ba80e3209d34cfeea87b848f6ae025e6 (git) Affected: a542ad1bafc7df9fc16de8a6894b350a4df75572 , < e58047553a4e859dafc8d1d901e1de77c9dd922d (git) Affected: a542ad1bafc7df9fc16de8a6894b350a4df75572 , < 8bdbcfaf3eac42f98e5486b3d7e130fa287811f6 (git) Affected: a542ad1bafc7df9fc16de8a6894b350a4df75572 , < 3a63cee1a5e14a3e52c19142c61dd5fcb524f6dc (git) Affected: a542ad1bafc7df9fc16de8a6894b350a4df75572 , < fddc19631c51d9c17d43e9f822a7bc403af88d54 (git) Affected: a542ad1bafc7df9fc16de8a6894b350a4df75572 , < 2f7ef5bb4a2f3e481ef05fab946edb97c84f67cf (git) |
|
| Linux | Linux |
Affected:
3.2
Unaffected: 0 , < 3.2 (semver) Unaffected: 4.19.313 , ≤ 4.19.* (semver) Unaffected: 5.4.275 , ≤ 5.4.* (semver) Unaffected: 5.10.216 , ≤ 5.10.* (semver) Unaffected: 5.15.158 , ≤ 5.15.* (semver) Unaffected: 6.1.90 , ≤ 6.1.* (semver) Unaffected: 6.6.30 , ≤ 6.6.* (semver) Unaffected: 6.8.9 , ≤ 6.8.* (semver) Unaffected: 6.9 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
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CVE-2024-38541 (GCVE-0-2024-38541)
Vulnerability from cvelistv5 – Published: 2024-06-19 13:35 – Updated: 2026-08-05 11:32
VLAI
EPSS
VEX
Title
of: module: add buffer overflow check in of_modalias()
Summary
In the Linux kernel, the following vulnerability has been resolved:
of: module: add buffer overflow check in of_modalias()
In of_modalias(), if the buffer happens to be too small even for the 1st
snprintf() call, the len parameter will become negative and str parameter
(if not NULL initially) will point beyond the buffer's end. Add the buffer
overflow check after the 1st snprintf() call and fix such check after the
strlen() call (accounting for the terminating NUL char).
Severity
7.8 (High)
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-07 19:51 UTC
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
10 references
Impacted products
12 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
bc575064d688c8933a6ca51429bea9bc63628d3b , < 46795440ef2b4ac919d09310a69a404c5bc90a88
(git)
Affected: bc575064d688c8933a6ca51429bea9bc63628d3b , < 733e62786bdf1b2b9dbb09ba2246313306503414 (git) Affected: bc575064d688c8933a6ca51429bea9bc63628d3b , < c7f24b7d94549ff4623e8f41ea4d9f5319bd8ac8 (git) Affected: bc575064d688c8933a6ca51429bea9bc63628d3b , < 5d59fd637a8af42b211a92b2edb2474325b4d488 (git) Affected: bc575064d688c8933a6ca51429bea9bc63628d3b , < 0b0d5701a8bf02f8fee037e81aacf6746558bfd6 (git) Affected: bc575064d688c8933a6ca51429bea9bc63628d3b , < ee332023adfd5882808f2dabf037b32d6ce36f9e (git) Affected: bc575064d688c8933a6ca51429bea9bc63628d3b , < e45b69360a63165377b30db4a1dfddd89ca18e9a (git) Affected: bc575064d688c8933a6ca51429bea9bc63628d3b , < cf7385cb26ac4f0ee6c7385960525ad534323252 (git) |
|
| Linux | Linux |
Affected:
4.14
Unaffected: 0 , < 4.14 (semver) Unaffected: 5.4.294 , ≤ 5.4.* (semver) Unaffected: 5.10.238 , ≤ 5.10.* (semver) Unaffected: 5.15.182 , ≤ 5.15.* (semver) Unaffected: 6.1.136 , ≤ 6.1.* (semver) Unaffected: 6.6.33 , ≤ 6.6.* (semver) Unaffected: 6.8.12 , ≤ 6.8.* (semver) Unaffected: 6.9.3 , ≤ 6.9.* (semver) Unaffected: 6.10 , ≤ * (original_commit_for_fix) |
|
| linux | linux_kernel |
Affected:
bc575064d688 , < 0b0d5701a8bf
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Affected:
bc575064d688 , < ee332023adfd
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Affected:
bc575064d688 , < e45b69360a63
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Affected:
bc575064d688 , < cf7385cb26ac
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Affected:
4.14
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
0 , < 4.14
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.6.33 , ≤ 6.7
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.8.12 , ≤ 6.9
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.9.3 , ≤ 6.10
(custom)
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| linux | linux_kernel |
Unaffected:
6.10-rc1
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
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CVE-2024-49924 (GCVE-0-2024-49924)
Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-08-05 11:40
VLAI
EPSS
VEX
Title
fbdev: pxafb: Fix possible use after free in pxafb_task()
Summary
In the Linux kernel, the following vulnerability has been resolved:
fbdev: pxafb: Fix possible use after free in pxafb_task()
In the pxafb_probe function, it calls the pxafb_init_fbinfo function,
after which &fbi->task is associated with pxafb_task. Moreover,
within this pxafb_init_fbinfo function, the pxafb_blank function
within the &pxafb_ops struct is capable of scheduling work.
If we remove the module which will call pxafb_remove to make cleanup,
it will call unregister_framebuffer function which can call
do_unregister_framebuffer to free fbi->fb through
put_fb_info(fb_info), while the work mentioned above will be used.
The sequence of operations that may lead to a UAF bug is as follows:
CPU0 CPU1
| pxafb_task
pxafb_remove |
unregister_framebuffer(info) |
do_unregister_framebuffer(fb_info) |
put_fb_info(fb_info) |
// free fbi->fb | set_ctrlr_state(fbi, state)
| __pxafb_lcd_power(fbi, 0)
| fbi->lcd_power(on, &fbi->fb.var)
| //use fbi->fb
Fix it by ensuring that the work is canceled before proceeding
with the cleanup in pxafb_remove.
Note that only root user can remove the driver at runtime.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:39 UTC
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
9f17f2874834f4cdbe48cc05676d8f7558793204 , < e657fa2df4429f3805a9b3e47fb1a4a1b02a72bd
(git)
Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < 6d0a07f68b66269e167def6c0b90a219cd3e7473 (git) Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < e6897e299f57b103e999e62010b88e363b3eebae (git) Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < 4cda484e584be34d55ee17436ebf7ad11922b97a (git) Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < 3c0d416eb4bef705f699213cee94bf54b6acdacd (git) Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < fdda354f60a576d52dcf90351254714681df4370 (git) Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < aaadc0cb05c999ccd8898a03298b7e5c31509b08 (git) Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < a3a855764dbacbdb1cc51e15dc588f2d21c93e0e (git) Affected: 9f17f2874834f4cdbe48cc05676d8f7558793204 , < 4a6921095eb04a900e0000da83d9475eb958e61e (git) |
|
| Linux | Linux |
Affected:
2.6.27
Unaffected: 0 , < 2.6.27 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (semver) Unaffected: 5.4.285 , ≤ 5.4.* (semver) Unaffected: 5.10.227 , ≤ 5.10.* (semver) Unaffected: 5.15.168 , ≤ 5.15.* (semver) Unaffected: 6.1.113 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
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CVE-2024-49950 (GCVE-0-2024-49950)
Vulnerability from cvelistv5 – Published: 2024-10-21 18:02 – Updated: 2026-08-05 11:40
VLAI
EPSS
VEX
Title
Bluetooth: L2CAP: Fix uaf in l2cap_connect
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: L2CAP: Fix uaf in l2cap_connect
[Syzbot reported]
BUG: KASAN: slab-use-after-free in l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949
Read of size 8 at addr ffff8880241e9800 by task kworker/u9:0/54
CPU: 0 UID: 0 PID: 54 Comm: kworker/u9:0 Not tainted 6.11.0-rc6-syzkaller-00268-g788220eee30d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: hci2 hci_rx_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949
l2cap_connect_req net/bluetooth/l2cap_core.c:4080 [inline]
l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:4772 [inline]
l2cap_sig_channel net/bluetooth/l2cap_core.c:5543 [inline]
l2cap_recv_frame+0xf0b/0x8eb0 net/bluetooth/l2cap_core.c:6825
l2cap_recv_acldata+0x9b4/0xb70 net/bluetooth/l2cap_core.c:7514
hci_acldata_packet net/bluetooth/hci_core.c:3791 [inline]
hci_rx_work+0xaab/0x1610 net/bluetooth/hci_core.c:4028
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
...
Freed by task 5245:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
__kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2256 [inline]
slab_free mm/slub.c:4477 [inline]
kfree+0x12a/0x3b0 mm/slub.c:4598
l2cap_conn_free net/bluetooth/l2cap_core.c:1810 [inline]
kref_put include/linux/kref.h:65 [inline]
l2cap_conn_put net/bluetooth/l2cap_core.c:1822 [inline]
l2cap_conn_del+0x59d/0x730 net/bluetooth/l2cap_core.c:1802
l2cap_connect_cfm+0x9e6/0xf80 net/bluetooth/l2cap_core.c:7241
hci_connect_cfm include/net/bluetooth/hci_core.h:1960 [inline]
hci_conn_failed+0x1c3/0x370 net/bluetooth/hci_conn.c:1265
hci_abort_conn_sync+0x75a/0xb50 net/bluetooth/hci_sync.c:5583
abort_conn_sync+0x197/0x360 net/bluetooth/hci_conn.c:2917
hci_cmd_sync_work+0x1a4/0x410 net/bluetooth/hci_sync.c:328
process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-22 13:36 UTC
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
7b064edae38d62d8587a8c574f93b53ce75ae749 , < 686e05c9dbd68766c6bda5f31f7e077f36a7fb29
(git)
Affected: 7b064edae38d62d8587a8c574f93b53ce75ae749 , < b22346eec479a30bfa4a02ad2c551b54809694d0 (git) Affected: 7b064edae38d62d8587a8c574f93b53ce75ae749 , < b90907696c30172b809aa3dd2f0caffae761e4c6 (git) Affected: 7b064edae38d62d8587a8c574f93b53ce75ae749 , < 78d30ce16fdf9c301bcd8b83ce613cea079cea83 (git) Affected: 7b064edae38d62d8587a8c574f93b53ce75ae749 , < a1c6174e23df10b8e5770e82d63bc6e2118a3dc7 (git) Affected: 7b064edae38d62d8587a8c574f93b53ce75ae749 , < 333b4fd11e89b29c84c269123f871883a30be586 (git) |
|
| Linux | Linux |
Affected:
3.8
Unaffected: 0 , < 3.8 (semver) Unaffected: 5.15.174 , ≤ 5.15.* (semver) Unaffected: 6.1.118 , ≤ 6.1.* (semver) Unaffected: 6.6.55 , ≤ 6.6.* (semver) Unaffected: 6.10.14 , ≤ 6.10.* (semver) Unaffected: 6.11.3 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-49950",
"options": [
{
"Exploitation": "none"
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{
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{
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"role": "CISA Coordinator",
"timestamp": "2024-10-22T13:36:31.459862Z",
"version": "2.0.3"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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{
"providerMetadata": {
"dateUpdated": "2025-11-03T22:23:30.897Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"references": [
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"net/bluetooth/hci_core.c",
"net/bluetooth/hci_event.c",
"net/bluetooth/l2cap_core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"status": "affected",
"version": "7b064edae38d62d8587a8c574f93b53ce75ae749",
"versionType": "git"
},
{
"lessThan": "b22346eec479a30bfa4a02ad2c551b54809694d0",
"status": "affected",
"version": "7b064edae38d62d8587a8c574f93b53ce75ae749",
"versionType": "git"
},
{
"lessThan": "b90907696c30172b809aa3dd2f0caffae761e4c6",
"status": "affected",
"version": "7b064edae38d62d8587a8c574f93b53ce75ae749",
"versionType": "git"
},
{
"lessThan": "78d30ce16fdf9c301bcd8b83ce613cea079cea83",
"status": "affected",
"version": "7b064edae38d62d8587a8c574f93b53ce75ae749",
"versionType": "git"
},
{
"lessThan": "a1c6174e23df10b8e5770e82d63bc6e2118a3dc7",
"status": "affected",
"version": "7b064edae38d62d8587a8c574f93b53ce75ae749",
"versionType": "git"
},
{
"lessThan": "333b4fd11e89b29c84c269123f871883a30be586",
"status": "affected",
"version": "7b064edae38d62d8587a8c574f93b53ce75ae749",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"net/bluetooth/hci_core.c",
"net/bluetooth/hci_event.c",
"net/bluetooth/l2cap_core.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "3.8"
},
{
"lessThan": "3.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.174",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.118",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.55",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.10.*",
"status": "unaffected",
"version": "6.10.14",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.11.*",
"status": "unaffected",
"version": "6.11.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.12",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.174",
"versionStartIncluding": "3.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.118",
"versionStartIncluding": "3.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.55",
"versionStartIncluding": "3.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.10.14",
"versionStartIncluding": "3.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.11.3",
"versionStartIncluding": "3.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12",
"versionStartIncluding": "3.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: L2CAP: Fix uaf in l2cap_connect\n\n[Syzbot reported]\nBUG: KASAN: slab-use-after-free in l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949\nRead of size 8 at addr ffff8880241e9800 by task kworker/u9:0/54\n\nCPU: 0 UID: 0 PID: 54 Comm: kworker/u9:0 Not tainted 6.11.0-rc6-syzkaller-00268-g788220eee30d #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024\nWorkqueue: hci2 hci_rx_work\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:93 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0xc3/0x620 mm/kasan/report.c:488\n kasan_report+0xd9/0x110 mm/kasan/report.c:601\n l2cap_connect.constprop.0+0x10d8/0x1270 net/bluetooth/l2cap_core.c:3949\n l2cap_connect_req net/bluetooth/l2cap_core.c:4080 [inline]\n l2cap_bredr_sig_cmd net/bluetooth/l2cap_core.c:4772 [inline]\n l2cap_sig_channel net/bluetooth/l2cap_core.c:5543 [inline]\n l2cap_recv_frame+0xf0b/0x8eb0 net/bluetooth/l2cap_core.c:6825\n l2cap_recv_acldata+0x9b4/0xb70 net/bluetooth/l2cap_core.c:7514\n hci_acldata_packet net/bluetooth/hci_core.c:3791 [inline]\n hci_rx_work+0xaab/0x1610 net/bluetooth/hci_core.c:4028\n process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231\n process_scheduled_works kernel/workqueue.c:3312 [inline]\n worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389\n kthread+0x2c1/0x3a0 kernel/kthread.c:389\n ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244\n...\n\nFreed by task 5245:\n kasan_save_stack+0x33/0x60 mm/kasan/common.c:47\n kasan_save_track+0x14/0x30 mm/kasan/common.c:68\n kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579\n poison_slab_object+0xf7/0x160 mm/kasan/common.c:240\n __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256\n kasan_slab_free include/linux/kasan.h:184 [inline]\n slab_free_hook mm/slub.c:2256 [inline]\n slab_free mm/slub.c:4477 [inline]\n kfree+0x12a/0x3b0 mm/slub.c:4598\n l2cap_conn_free net/bluetooth/l2cap_core.c:1810 [inline]\n kref_put include/linux/kref.h:65 [inline]\n l2cap_conn_put net/bluetooth/l2cap_core.c:1822 [inline]\n l2cap_conn_del+0x59d/0x730 net/bluetooth/l2cap_core.c:1802\n l2cap_connect_cfm+0x9e6/0xf80 net/bluetooth/l2cap_core.c:7241\n hci_connect_cfm include/net/bluetooth/hci_core.h:1960 [inline]\n hci_conn_failed+0x1c3/0x370 net/bluetooth/hci_conn.c:1265\n hci_abort_conn_sync+0x75a/0xb50 net/bluetooth/hci_sync.c:5583\n abort_conn_sync+0x197/0x360 net/bluetooth/hci_conn.c:2917\n hci_cmd_sync_work+0x1a4/0x410 net/bluetooth/hci_sync.c:328\n process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231\n process_scheduled_works kernel/workqueue.c:3312 [inline]\n worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389\n kthread+0x2c1/0x3a0 kernel/kthread.c:389\n ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:A - The vulnerable code is reached purely from ACL data received from a remote Bluetooth peer on the BR/EDR L2CAP signalling channel (hci_rx_work \u2192 hci_acldata_packet \u2192 l2cap_recv_acldata \u2192 l2cap_sig_channel \u2192 l2cap_connect_req). Bluetooth range constitutes an adjacent network.\nAC:L - The remote peer controls both sides of the race \u2014 it chooses when to inject the L2CAP connect request relative to link setup (the exact condition named in the Fixes: commit) and can induce the concurrent connection abort by failing the security escalation its own request triggers or by repeated connect/teardown. The attempt is free to repeat until it wins.\nPR:N - L2CAP signalling commands are processed on an unauthenticated, unpaired ACL link; the hci_conn_check_link_mode() security check sits inside l2cap_connect() and executes only after the use-after-free dereference. No credentials or local account are needed.\nUI:N - Processing of an inbound ACL connection and its L2CAP connect request happens automatically in the kernel rx workqueue on any connectable device. No victim action is required.\nS:U - The corruption and its consequences are confined to the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed struct l2cap_conn is read back and its embedded pointers (conn-\u003ehcon, conn-\u003ehcon-\u003ehdev) are chased; since the object comes from a general kmalloc cache reclaimable by sprayed data, an attacker can steer those dereferences to disclose arbitrary kernel memory.\nI:H - Execution continues writing into the freed object \u2014 conn-\u003einfo_state, conn-\u003einfo_ident, conn-\u003ehcon-\u003edisc_timeout, a list_add into freed conn-\u003echan_l, and schedule_delayed_work() on a work_struct with an attacker-reclaimable function pointer \u2014 giving a write and control-flow-hijack primitive.\nA:H - The use-after-free reliably oopses the kernel in the Bluetooth rx workqueue (as KASAN reported), and mutex_lock on freed memory plus a queued timer in reclaimed slab cause panics or corruption-induced crashes."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:40:37.563Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/686e05c9dbd68766c6bda5f31f7e077f36a7fb29"
},
{
"url": "https://git.kernel.org/stable/c/b22346eec479a30bfa4a02ad2c551b54809694d0"
},
{
"url": "https://git.kernel.org/stable/c/b90907696c30172b809aa3dd2f0caffae761e4c6"
},
{
"url": "https://git.kernel.org/stable/c/78d30ce16fdf9c301bcd8b83ce613cea079cea83"
},
{
"url": "https://git.kernel.org/stable/c/a1c6174e23df10b8e5770e82d63bc6e2118a3dc7"
},
{
"url": "https://git.kernel.org/stable/c/333b4fd11e89b29c84c269123f871883a30be586"
}
],
"title": "Bluetooth: L2CAP: Fix uaf in l2cap_connect",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-49950",
"datePublished": "2024-10-21T18:02:06.387Z",
"dateReserved": "2024-10-21T12:17:06.046Z",
"dateUpdated": "2026-08-05T11:40:37.563Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2024-50073 (GCVE-0-2024-50073)
Vulnerability from cvelistv5 – Published: 2024-10-29 00:50 – Updated: 2026-08-05 11:41
VLAI
EPSS
VEX
Title
tty: n_gsm: Fix use-after-free in gsm_cleanup_mux
Summary
In the Linux kernel, the following vulnerability has been resolved:
tty: n_gsm: Fix use-after-free in gsm_cleanup_mux
BUG: KASAN: slab-use-after-free in gsm_cleanup_mux+0x77b/0x7b0
drivers/tty/n_gsm.c:3160 [n_gsm]
Read of size 8 at addr ffff88815fe99c00 by task poc/3379
CPU: 0 UID: 0 PID: 3379 Comm: poc Not tainted 6.11.0+ #56
Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 11/12/2020
Call Trace:
<TASK>
gsm_cleanup_mux+0x77b/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm]
__pfx_gsm_cleanup_mux+0x10/0x10 drivers/tty/n_gsm.c:3124 [n_gsm]
__pfx_sched_clock_cpu+0x10/0x10 kernel/sched/clock.c:389
update_load_avg+0x1c1/0x27b0 kernel/sched/fair.c:4500
__pfx_min_vruntime_cb_rotate+0x10/0x10 kernel/sched/fair.c:846
__rb_insert_augmented+0x492/0xbf0 lib/rbtree.c:161
gsmld_ioctl+0x395/0x1450 drivers/tty/n_gsm.c:3408 [n_gsm]
_raw_spin_lock_irqsave+0x92/0xf0 arch/x86/include/asm/atomic.h:107
__pfx_gsmld_ioctl+0x10/0x10 drivers/tty/n_gsm.c:3822 [n_gsm]
ktime_get+0x5e/0x140 kernel/time/timekeeping.c:195
ldsem_down_read+0x94/0x4e0 arch/x86/include/asm/atomic64_64.h:79
__pfx_ldsem_down_read+0x10/0x10 drivers/tty/tty_ldsem.c:338
__pfx_do_vfs_ioctl+0x10/0x10 fs/ioctl.c:805
tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818
Allocated by task 65:
gsm_data_alloc.constprop.0+0x27/0x190 drivers/tty/n_gsm.c:926 [n_gsm]
gsm_send+0x2c/0x580 drivers/tty/n_gsm.c:819 [n_gsm]
gsm1_receive+0x547/0xad0 drivers/tty/n_gsm.c:3038 [n_gsm]
gsmld_receive_buf+0x176/0x280 drivers/tty/n_gsm.c:3609 [n_gsm]
tty_ldisc_receive_buf+0x101/0x1e0 drivers/tty/tty_buffer.c:391
tty_port_default_receive_buf+0x61/0xa0 drivers/tty/tty_port.c:39
flush_to_ldisc+0x1b0/0x750 drivers/tty/tty_buffer.c:445
process_scheduled_works+0x2b0/0x10d0 kernel/workqueue.c:3229
worker_thread+0x3dc/0x950 kernel/workqueue.c:3391
kthread+0x2a3/0x370 kernel/kthread.c:389
ret_from_fork+0x2d/0x70 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:257
Freed by task 3367:
kfree+0x126/0x420 mm/slub.c:4580
gsm_cleanup_mux+0x36c/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm]
gsmld_ioctl+0x395/0x1450 drivers/tty/n_gsm.c:3408 [n_gsm]
tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818
[Analysis]
gsm_msg on the tx_ctrl_list or tx_data_list of gsm_mux
can be freed by multi threads through ioctl,which leads
to the occurrence of uaf. Protect it by gsm tx lock.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:26 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
0af021678d5d30c31f5a6b631f404ead3575212a , < bf171b5e86e41de4c1cf32fb7aefa275c3d7de49
(git)
Affected: 0af021678d5d30c31f5a6b631f404ead3575212a , < c29f192e0d44cc1cbaf698fa1ff198f63556691a (git) Affected: 0af021678d5d30c31f5a6b631f404ead3575212a , < 0eec592c6a7460ba795d7de29f3dc95cb5422e62 (git) Affected: 0af021678d5d30c31f5a6b631f404ead3575212a , < 9462f4ca56e7d2430fdb6dcc8498244acbfc4489 (git) Affected: 5020173e7e7725110a8d4be1359bf1dfc4b1814d (git) Affected: c165698c9919b000bdbe73859d3bb7b33bdb9223 (git) Affected: 7962a4b900099cf90e02859bb297f2c618d8d940 (git) Affected: 5.15.209 , < 5.16 (semver) Affected: 5.18.18 , < 5.19 (semver) Affected: 5.19.2 , < 5.20 (semver) |
|
| Linux | Linux |
Affected:
6.0
Unaffected: 0 , < 6.0 (semver) Unaffected: 6.1.114 , ≤ 6.1.* (semver) Unaffected: 6.6.58 , ≤ 6.6.* (semver) Unaffected: 6.11.5 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
{
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"scope": "UNCHANGED",
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"version": "3.1"
}
},
{
"other": {
"content": {
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"options": [
{
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{
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{
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"version": "2.0.3"
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{
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],
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"vendor": "Linux",
"versions": [
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},
{
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"status": "unaffected",
"version": "0",
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{
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{
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"status": "unaffected",
"version": "6.6.58",
"versionType": "semver"
},
{
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"version": "6.11.5",
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},
{
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"status": "unaffected",
"version": "6.12",
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"cpeApplicability": [
{
"nodes": [
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"vulnerable": true
},
{
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},
{
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"vulnerable": true
},
{
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"negate": false,
"operator": "OR"
}
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}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: n_gsm: Fix use-after-free in gsm_cleanup_mux\n\nBUG: KASAN: slab-use-after-free in gsm_cleanup_mux+0x77b/0x7b0\ndrivers/tty/n_gsm.c:3160 [n_gsm]\nRead of size 8 at addr ffff88815fe99c00 by task poc/3379\nCPU: 0 UID: 0 PID: 3379 Comm: poc Not tainted 6.11.0+ #56\nHardware name: VMware, Inc. VMware Virtual Platform/440BX\nDesktop Reference Platform, BIOS 6.00 11/12/2020\nCall Trace:\n \u003cTASK\u003e\n gsm_cleanup_mux+0x77b/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm]\n __pfx_gsm_cleanup_mux+0x10/0x10 drivers/tty/n_gsm.c:3124 [n_gsm]\n __pfx_sched_clock_cpu+0x10/0x10 kernel/sched/clock.c:389\n update_load_avg+0x1c1/0x27b0 kernel/sched/fair.c:4500\n __pfx_min_vruntime_cb_rotate+0x10/0x10 kernel/sched/fair.c:846\n __rb_insert_augmented+0x492/0xbf0 lib/rbtree.c:161\n gsmld_ioctl+0x395/0x1450 drivers/tty/n_gsm.c:3408 [n_gsm]\n _raw_spin_lock_irqsave+0x92/0xf0 arch/x86/include/asm/atomic.h:107\n __pfx_gsmld_ioctl+0x10/0x10 drivers/tty/n_gsm.c:3822 [n_gsm]\n ktime_get+0x5e/0x140 kernel/time/timekeeping.c:195\n ldsem_down_read+0x94/0x4e0 arch/x86/include/asm/atomic64_64.h:79\n __pfx_ldsem_down_read+0x10/0x10 drivers/tty/tty_ldsem.c:338\n __pfx_do_vfs_ioctl+0x10/0x10 fs/ioctl.c:805\n tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818\n\nAllocated by task 65:\n gsm_data_alloc.constprop.0+0x27/0x190 drivers/tty/n_gsm.c:926 [n_gsm]\n gsm_send+0x2c/0x580 drivers/tty/n_gsm.c:819 [n_gsm]\n gsm1_receive+0x547/0xad0 drivers/tty/n_gsm.c:3038 [n_gsm]\n gsmld_receive_buf+0x176/0x280 drivers/tty/n_gsm.c:3609 [n_gsm]\n tty_ldisc_receive_buf+0x101/0x1e0 drivers/tty/tty_buffer.c:391\n tty_port_default_receive_buf+0x61/0xa0 drivers/tty/tty_port.c:39\n flush_to_ldisc+0x1b0/0x750 drivers/tty/tty_buffer.c:445\n process_scheduled_works+0x2b0/0x10d0 kernel/workqueue.c:3229\n worker_thread+0x3dc/0x950 kernel/workqueue.c:3391\n kthread+0x2a3/0x370 kernel/kthread.c:389\n ret_from_fork+0x2d/0x70 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:257\n\nFreed by task 3367:\n kfree+0x126/0x420 mm/slub.c:4580\n gsm_cleanup_mux+0x36c/0x7b0 drivers/tty/n_gsm.c:3160 [n_gsm]\n gsmld_ioctl+0x395/0x1450 drivers/tty/n_gsm.c:3408 [n_gsm]\n tty_ioctl+0x643/0x1100 drivers/tty/tty_io.c:2818\n\n[Analysis]\ngsm_msg on the tx_ctrl_list or tx_data_list of gsm_mux\ncan be freed by multi threads through ioctl,which leads\nto the occurrence of uaf. Protect it by gsm tx lock."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The vulnerability is triggered entirely through local syscalls on a tty file descriptor \u2014 `ioctl(TIOCSETD, N_GSM0710)` followed by concurrent `ioctl(GSMIOC_SETCONF)` on a pty the attacker owns. No network or physical access is involved.\nAC:L - The attacker controls both sides of the race \u2014 two threads issuing `GSMIOC_SETCONF` on the same fd, which `tty_ldisc_ref_wait()`\u0027s read semaphore explicitly permits to run concurrently \u2014 and additionally controls list population by writing to the pty peer to queue `gsm_msg` nodes on demand. No condition depends on attacker-uninfluenceable state.\nPR:L - For mainline v6.0\u2013v6.5 and the never-fixed 5.18.18/5.19.2 stable branches covered by this CVE, `gsmld_open()` has no capability check at all, so any unprivileged local user with a pty reaches the bug; even on kernels carrying the later `capable(CAP_NET_ADMIN)` gate, that is a scoped, non-root-equivalent capability routinely granted to network daemons and containers (`--cap-add=NET_ADMIN`).\nUI:N - The attacker performs every step itself \u2014 allocating the pty, attaching the line discipline, feeding data, and racing the two ioctls. No victim action or cooperating process is required.\nS:U - The corruption and its consequences are confined to the kernel of the running system, a standard local privilege-escalation boundary. No hypervisor, IOMMU, or other security-authority boundary is crossed.\nC:H - The unlocked traversal reads `list.next` from a freed, attacker-reclaimable slab object, and the resulting arbitrary-free primitive converts into a use-after-free on a chosen kernel object, enabling arbitrary kernel memory disclosure.\nI:H - Concurrent `kfree()` of the same nodes double-frees them and corrupts the SLUB freelist, while a sprayed `next` pointer yields `kfree()` of an attacker-chosen address \u2014 an arbitrary-free primitive that is a well-established path to arbitrary write and control-flow hijack.\nA:H - The double-free and use-after-free reliably corrupt slab metadata, producing kernel oops or panic even in unweaponized form, as demonstrated by the KASAN slab-use-after-free report in the fix commit."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:41:23.613Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/bf171b5e86e41de4c1cf32fb7aefa275c3d7de49"
},
{
"url": "https://git.kernel.org/stable/c/c29f192e0d44cc1cbaf698fa1ff198f63556691a"
},
{
"url": "https://git.kernel.org/stable/c/0eec592c6a7460ba795d7de29f3dc95cb5422e62"
},
{
"url": "https://git.kernel.org/stable/c/9462f4ca56e7d2430fdb6dcc8498244acbfc4489"
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"title": "tty: n_gsm: Fix use-after-free in gsm_cleanup_mux",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2024-50073",
"datePublished": "2024-10-29T00:50:15.219Z",
"dateReserved": "2024-10-21T19:36:19.940Z",
"dateUpdated": "2026-08-05T11:41:23.613Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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}
CVE-2024-57996 (GCVE-0-2024-57996)
Vulnerability from cvelistv5 – Published: 2025-02-27 02:07 – Updated: 2026-08-05 11:47
VLAI
EPSS
VEX
Title
net_sched: sch_sfq: don't allow 1 packet limit
Summary
In the Linux kernel, the following vulnerability has been resolved:
net_sched: sch_sfq: don't allow 1 packet limit
The current implementation does not work correctly with a limit of
1. iproute2 actually checks for this and this patch adds the check in
kernel as well.
This fixes the following syzkaller reported crash:
UBSAN: array-index-out-of-bounds in net/sched/sch_sfq.c:210:6
index 65535 is out of range for type 'struct sfq_head[128]'
CPU: 0 PID: 2569 Comm: syz-executor101 Not tainted 5.10.0-smp-DEV #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x125/0x19f lib/dump_stack.c:120
ubsan_epilogue lib/ubsan.c:148 [inline]
__ubsan_handle_out_of_bounds+0xed/0x120 lib/ubsan.c:347
sfq_link net/sched/sch_sfq.c:210 [inline]
sfq_dec+0x528/0x600 net/sched/sch_sfq.c:238
sfq_dequeue+0x39b/0x9d0 net/sched/sch_sfq.c:500
sfq_reset+0x13/0x50 net/sched/sch_sfq.c:525
qdisc_reset+0xfe/0x510 net/sched/sch_generic.c:1026
tbf_reset+0x3d/0x100 net/sched/sch_tbf.c:319
qdisc_reset+0xfe/0x510 net/sched/sch_generic.c:1026
dev_reset_queue+0x8c/0x140 net/sched/sch_generic.c:1296
netdev_for_each_tx_queue include/linux/netdevice.h:2350 [inline]
dev_deactivate_many+0x6dc/0xc20 net/sched/sch_generic.c:1362
__dev_close_many+0x214/0x350 net/core/dev.c:1468
dev_close_many+0x207/0x510 net/core/dev.c:1506
unregister_netdevice_many+0x40f/0x16b0 net/core/dev.c:10738
unregister_netdevice_queue+0x2be/0x310 net/core/dev.c:10695
unregister_netdevice include/linux/netdevice.h:2893 [inline]
__tun_detach+0x6b6/0x1600 drivers/net/tun.c:689
tun_detach drivers/net/tun.c:705 [inline]
tun_chr_close+0x104/0x1b0 drivers/net/tun.c:3640
__fput+0x203/0x840 fs/file_table.c:280
task_work_run+0x129/0x1b0 kernel/task_work.c:185
exit_task_work include/linux/task_work.h:33 [inline]
do_exit+0x5ce/0x2200 kernel/exit.c:931
do_group_exit+0x144/0x310 kernel/exit.c:1046
__do_sys_exit_group kernel/exit.c:1057 [inline]
__se_sys_exit_group kernel/exit.c:1055 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1055
do_syscall_64+0x6c/0xd0
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe5e7b52479
Code: Unable to access opcode bytes at RIP 0x7fe5e7b5244f.
RSP: 002b:00007ffd3c800398 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe5e7b52479
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007fe5e7bcd2d0 R08: ffffffffffffffb8 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe5e7bcd2d0
R13: 0000000000000000 R14: 00007fe5e7bcdd20 R15: 00007fe5e7b24270
The crash can be also be reproduced with the following (with a tc
recompiled to allow for sfq limits of 1):
tc qdisc add dev dummy0 handle 1: root tbf rate 1Kbit burst 100b lat 1s
../iproute2-6.9.0/tc/tc qdisc add dev dummy0 handle 2: parent 1:10 sfq limit 1
ifconfig dummy0 up
ping -I dummy0 -f -c2 -W0.1 8.8.8.8
sleep 1
Scenario that triggers the crash:
* the first packet is sent and queued in TBF and SFQ; qdisc qlen is 1
* TBF dequeues: it peeks from SFQ which moves the packet to the
gso_skb list and keeps qdisc qlen set to 1. TBF is out of tokens so
it schedules itself for later.
* the second packet is sent and TBF tries to queues it to SFQ. qdisc
qlen is now 2 and because the SFQ limit is 1 the packet is dropped
by SFQ. At this point qlen is 1, and all of the SFQ slots are empty,
however q->tail is not NULL.
At this point, assuming no more packets are queued, when sch_dequeue
runs again it will decrement the qlen for the current empty slot
causing an underflow and the subsequent out of bounds access.
Severity
7.8 (High)
Assigner
References
11 references
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e12f6013d0a69660e8b99bfe381b9546ae667328
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1e6d9d87626cf89eeffb4d943db12cb5b10bf961 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1b562b7f9231432da40d12e19786c1bd7df653a7 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 35d0137305ae2f97260a9047f445bd4434bd6cc7 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 833e9a1c27b82024db7ff5038a51651f48f05e5e (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7d8947f2153ee9c5ab4cb17861a11cc45f30e8c4 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7fefc294204f10a3405f175f4ac2be16d63f135e (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 10685681bafce6febb39770f3387621bf5d67d0b (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.4.297 , ≤ 5.4.* (semver) Unaffected: 5.10.239 , ≤ 5.10.* (semver) Unaffected: 5.15.186 , ≤ 5.15.* (semver) Unaffected: 6.1.129 , ≤ 6.1.* (semver) Unaffected: 6.6.76 , ≤ 6.6.* (semver) Unaffected: 6.12.13 , ≤ 6.12.* (semver) Unaffected: 6.13.2 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2025-11-03T19:33:07.578Z",
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},
{
"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"
}
],
"title": "CVE Program Container"
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"defaultStatus": "unknown",
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CVE-2024-58090 (GCVE-0-2024-58090)
Vulnerability from cvelistv5 – Published: 2025-03-27 14:57 – Updated: 2026-05-11 21:03
VLAI
EPSS
VEX
Title
sched/core: Prevent rescheduling when interrupts are disabled
Summary
In the Linux kernel, the following vulnerability has been resolved:
sched/core: Prevent rescheduling when interrupts are disabled
David reported a warning observed while loop testing kexec jump:
Interrupts enabled after irqrouter_resume+0x0/0x50
WARNING: CPU: 0 PID: 560 at drivers/base/syscore.c:103 syscore_resume+0x18a/0x220
kernel_kexec+0xf6/0x180
__do_sys_reboot+0x206/0x250
do_syscall_64+0x95/0x180
The corresponding interrupt flag trace:
hardirqs last enabled at (15573): [<ffffffffa8281b8e>] __up_console_sem+0x7e/0x90
hardirqs last disabled at (15580): [<ffffffffa8281b73>] __up_console_sem+0x63/0x90
That means __up_console_sem() was invoked with interrupts enabled. Further
instrumentation revealed that in the interrupt disabled section of kexec
jump one of the syscore_suspend() callbacks woke up a task, which set the
NEED_RESCHED flag. A later callback in the resume path invoked
cond_resched() which in turn led to the invocation of the scheduler:
__cond_resched+0x21/0x60
down_timeout+0x18/0x60
acpi_os_wait_semaphore+0x4c/0x80
acpi_ut_acquire_mutex+0x3d/0x100
acpi_ns_get_node+0x27/0x60
acpi_ns_evaluate+0x1cb/0x2d0
acpi_rs_set_srs_method_data+0x156/0x190
acpi_pci_link_set+0x11c/0x290
irqrouter_resume+0x54/0x60
syscore_resume+0x6a/0x200
kernel_kexec+0x145/0x1c0
__do_sys_reboot+0xeb/0x240
do_syscall_64+0x95/0x180
This is a long standing problem, which probably got more visible with
the recent printk changes. Something does a task wakeup and the
scheduler sets the NEED_RESCHED flag. cond_resched() sees it set and
invokes schedule() from a completely bogus context. The scheduler
enables interrupts after context switching, which causes the above
warning at the end.
Quite some of the code paths in syscore_suspend()/resume() can result in
triggering a wakeup with the exactly same consequences. They might not
have done so yet, but as they share a lot of code with normal operations
it's just a question of time.
The problem only affects the PREEMPT_NONE and PREEMPT_VOLUNTARY scheduling
models. Full preemption is not affected as cond_resched() is disabled and
the preemption check preemptible() takes the interrupt disabled flag into
account.
Cure the problem by adding a corresponding check into cond_resched().
Severity
No CVSS data available.
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 321794b75ac968f0bb6b9c913581949452a8d992
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1651f5731b378616565534eb9cda30e258cebebc (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 288fdb8dcb71ec77b76ab8b8a06bc10f595ea504 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 84586322e010164eedddfcd0a0894206ae7d9317 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 68786ab0935ccd5721283b7eb7f4d2f2942c7a52 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0362847c520747b44b574d363705d8af0621727a (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b927c8539f692fb1f9c2f42e6c8ea2d94956f921 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 82c387ef7568c0d96a918a5a78d9cad6256cfa15 (git) |
|
| Linux | Linux |
Affected:
2.6.12
Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.4.291 , ≤ 5.4.* (semver) Unaffected: 5.10.235 , ≤ 5.10.* (semver) Unaffected: 5.15.179 , ≤ 5.15.* (semver) Unaffected: 6.1.130 , ≤ 6.1.* (semver) Unaffected: 6.6.81 , ≤ 6.6.* (semver) Unaffected: 6.12.18 , ≤ 6.12.* (semver) Unaffected: 6.13.6 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix) |
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CVE-2025-21796 (GCVE-0-2025-21796)
Vulnerability from cvelistv5 – Published: 2025-02-27 02:18 – Updated: 2026-08-05 11:54
VLAI
EPSS
VEX
Title
nfsd: clear acl_access/acl_default after releasing them
Summary
In the Linux kernel, the following vulnerability has been resolved:
nfsd: clear acl_access/acl_default after releasing them
If getting acl_default fails, acl_access and acl_default will be released
simultaneously. However, acl_access will still retain a pointer pointing
to the released posix_acl, which will trigger a WARNING in
nfs3svc_release_getacl like this:
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 26 PID: 3199 at lib/refcount.c:28
refcount_warn_saturate+0xb5/0x170
Modules linked in:
CPU: 26 UID: 0 PID: 3199 Comm: nfsd Not tainted
6.12.0-rc6-00079-g04ae226af01f-dirty #8
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
1.16.1-2.fc37 04/01/2014
RIP: 0010:refcount_warn_saturate+0xb5/0x170
Code: cc cc 0f b6 1d b3 20 a5 03 80 fb 01 0f 87 65 48 d8 00 83 e3 01 75
e4 48 c7 c7 c0 3b 9b 85 c6 05 97 20 a5 03 01 e8 fb 3e 30 ff <0f> 0b eb
cd 0f b6 1d 8a3
RSP: 0018:ffffc90008637cd8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83904fde
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff88871ed36380
RBP: ffff888158beeb40 R08: 0000000000000001 R09: fffff520010c6f56
R10: ffffc90008637ab7 R11: 0000000000000001 R12: 0000000000000001
R13: ffff888140e77400 R14: ffff888140e77408 R15: ffffffff858b42c0
FS: 0000000000000000(0000) GS:ffff88871ed00000(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562384d32158 CR3: 000000055cc6a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
? refcount_warn_saturate+0xb5/0x170
? __warn+0xa5/0x140
? refcount_warn_saturate+0xb5/0x170
? report_bug+0x1b1/0x1e0
? handle_bug+0x53/0xa0
? exc_invalid_op+0x17/0x40
? asm_exc_invalid_op+0x1a/0x20
? tick_nohz_tick_stopped+0x1e/0x40
? refcount_warn_saturate+0xb5/0x170
? refcount_warn_saturate+0xb5/0x170
nfs3svc_release_getacl+0xc9/0xe0
svc_process_common+0x5db/0xb60
? __pfx_svc_process_common+0x10/0x10
? __rcu_read_unlock+0x69/0xa0
? __pfx_nfsd_dispatch+0x10/0x10
? svc_xprt_received+0xa1/0x120
? xdr_init_decode+0x11d/0x190
svc_process+0x2a7/0x330
svc_handle_xprt+0x69d/0x940
svc_recv+0x180/0x2d0
nfsd+0x168/0x200
? __pfx_nfsd+0x10/0x10
kthread+0x1a2/0x1e0
? kthread+0xf4/0x1e0
? __pfx_kthread+0x10/0x10
ret_from_fork+0x34/0x60
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1a/0x30
</TASK>
Kernel panic - not syncing: kernel: panic_on_warn set ...
Clear acl_access/acl_default after posix_acl_release is called to prevent
UAF from being triggered.
Severity
9.8 (Critical)
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 17:57 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
12 references
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
a257cdd0e2179630d3201c32ba14d7fcb3c3a055 , < 8a1737ae42c928384ab6447f6ee1a882510e85fa
(git)
Affected: a257cdd0e2179630d3201c32ba14d7fcb3c3a055 , < 6f7cfee1a316891890c505563aa54f3476db52fd (git) Affected: a257cdd0e2179630d3201c32ba14d7fcb3c3a055 , < 2e59b2b68782519560b3d6a41dd66a3d01a01cd3 (git) Affected: a257cdd0e2179630d3201c32ba14d7fcb3c3a055 , < 55d947315fb5f67a35e4e1d3e01bb886b9c6decf (git) Affected: a257cdd0e2179630d3201c32ba14d7fcb3c3a055 , < f8d871523142f7895f250a856f8c4a4181614510 (git) Affected: a257cdd0e2179630d3201c32ba14d7fcb3c3a055 , < 1fd94884174bd20beb1773990fd3b1aa877688d9 (git) Affected: a257cdd0e2179630d3201c32ba14d7fcb3c3a055 , < 7faf14a7b0366f153284db0ad3347c457ea70136 (git) |
|
| Linux | Linux |
Affected:
2.6.13
Unaffected: 0 , < 2.6.13 (semver) Unaffected: 5.10.235 , ≤ 5.10.* (semver) Unaffected: 5.15.179 , ≤ 5.15.* (semver) Unaffected: 6.1.129 , ≤ 6.1.* (semver) Unaffected: 6.6.79 , ≤ 6.6.* (semver) Unaffected: 6.12.16 , ≤ 6.12.* (semver) Unaffected: 6.13.4 , ≤ 6.13.* (semver) Unaffected: 6.14 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
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"status": "unaffected",
"version": "6.1.129",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.79",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.16",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.13.*",
"status": "unaffected",
"version": "6.13.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.14",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.235",
"versionStartIncluding": "2.6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.179",
"versionStartIncluding": "2.6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.129",
"versionStartIncluding": "2.6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.79",
"versionStartIncluding": "2.6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.16",
"versionStartIncluding": "2.6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.13.4",
"versionStartIncluding": "2.6.13",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14",
"versionStartIncluding": "2.6.13",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: clear acl_access/acl_default after releasing them\n\nIf getting acl_default fails, acl_access and acl_default will be released\nsimultaneously. However, acl_access will still retain a pointer pointing\nto the released posix_acl, which will trigger a WARNING in\nnfs3svc_release_getacl like this:\n\n------------[ cut here ]------------\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 26 PID: 3199 at lib/refcount.c:28\nrefcount_warn_saturate+0xb5/0x170\nModules linked in:\nCPU: 26 UID: 0 PID: 3199 Comm: nfsd Not tainted\n6.12.0-rc6-00079-g04ae226af01f-dirty #8\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n1.16.1-2.fc37 04/01/2014\nRIP: 0010:refcount_warn_saturate+0xb5/0x170\nCode: cc cc 0f b6 1d b3 20 a5 03 80 fb 01 0f 87 65 48 d8 00 83 e3 01 75\ne4 48 c7 c7 c0 3b 9b 85 c6 05 97 20 a5 03 01 e8 fb 3e 30 ff \u003c0f\u003e 0b eb\ncd 0f b6 1d 8a3\nRSP: 0018:ffffc90008637cd8 EFLAGS: 00010282\nRAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83904fde\nRDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff88871ed36380\nRBP: ffff888158beeb40 R08: 0000000000000001 R09: fffff520010c6f56\nR10: ffffc90008637ab7 R11: 0000000000000001 R12: 0000000000000001\nR13: ffff888140e77400 R14: ffff888140e77408 R15: ffffffff858b42c0\nFS: 0000000000000000(0000) GS:ffff88871ed00000(0000)\nknlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000562384d32158 CR3: 000000055cc6a000 CR4: 00000000000006f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ? refcount_warn_saturate+0xb5/0x170\n ? __warn+0xa5/0x140\n ? refcount_warn_saturate+0xb5/0x170\n ? report_bug+0x1b1/0x1e0\n ? handle_bug+0x53/0xa0\n ? exc_invalid_op+0x17/0x40\n ? asm_exc_invalid_op+0x1a/0x20\n ? tick_nohz_tick_stopped+0x1e/0x40\n ? refcount_warn_saturate+0xb5/0x170\n ? refcount_warn_saturate+0xb5/0x170\n nfs3svc_release_getacl+0xc9/0xe0\n svc_process_common+0x5db/0xb60\n ? __pfx_svc_process_common+0x10/0x10\n ? __rcu_read_unlock+0x69/0xa0\n ? __pfx_nfsd_dispatch+0x10/0x10\n ? svc_xprt_received+0xa1/0x120\n ? xdr_init_decode+0x11d/0x190\n svc_process+0x2a7/0x330\n svc_handle_xprt+0x69d/0x940\n svc_recv+0x180/0x2d0\n nfsd+0x168/0x200\n ? __pfx_nfsd+0x10/0x10\n kthread+0x1a2/0x1e0\n ? kthread+0xf4/0x1e0\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x34/0x60\n ? __pfx_kthread+0x10/0x10\n ret_from_fork_asm+0x1a/0x30\n \u003c/TASK\u003e\nKernel panic - not syncing: kernel: panic_on_warn set ...\n\nClear acl_access/acl_default after posix_acl_release is called to prevent\nUAF from being triggered."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable functions are the NFSACL sideband RPC handlers (program 100227, ACLPROC2/3_GETACL) served by the in-kernel nfsd on port 2049; a remote NFS client reaches them purely by sending a GETACL call with a filehandle and a mask.\nAC:L - The attacker fully controls the mask field that selects both the access and default ACL branches, and can retry indefinitely; the error condition is deterministic on FUSE-backed exports and on any file with a malformed/corrupt system.posix_acl_default xattr, and is otherwise reachable via the unlocked -ERANGE window in ext4_get_acl that the attacker drives from both sides with concurrent SETACL/GETACL.\nPR:N - NFS AUTH_SYS performs no real authentication \u2014 the client merely asserts a uid \u2014 and fh_verify() is called with NFSD_MAY_NOP, so nfsd_permission() returns 0 without any file ownership or mode check; any host permitted by the export list can issue GETACL against any object in the export.\nUI:N - The entire sequence is driven by attacker-sent RPC calls handled by the nfsd kernel threads; no action by a local user or administrator is required.\nS:U - The freed posix_acl, the dangling inode-\u003ei_acl, and the resulting corruption all reside in the kernel\u0027s own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - In the NFSv2-ACL encoder the released posix_acl is still passed to nfs_stream_encode_acl(), which reads a_count and up to 1024 a_entries[] from the freed slab object and transmits them to the remote client, yielding freed-heap disclosure plus a large out-of-bounds read; the cached-ACL variant additionally leaves inode-\u003ei_acl dangling for later reads.\nI:H - The second posix_acl_release() performs an atomic decrement into freed (potentially reallocated) slab memory, and in the cached case the dangling inode-\u003ei_acl leads to refcount_inc on freed memory, a genuine double free on the next set/forget_cached_acl, and posix_acl_permission() making file access-control decisions from attacker-groomable freed heap contents.\nA:H - The bug reproduces as a refcount_t underflow WARN in nfs3svc_release_getacl (kernel panic with panic_on_warn, as shown in the commit\u0027s own report), and the use-after-free of a slab object causes further corruption and oopses; it is remotely and repeatedly triggerable."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:54:31.388Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/8a1737ae42c928384ab6447f6ee1a882510e85fa"
},
{
"url": "https://git.kernel.org/stable/c/6f7cfee1a316891890c505563aa54f3476db52fd"
},
{
"url": "https://git.kernel.org/stable/c/2e59b2b68782519560b3d6a41dd66a3d01a01cd3"
},
{
"url": "https://git.kernel.org/stable/c/55d947315fb5f67a35e4e1d3e01bb886b9c6decf"
},
{
"url": "https://git.kernel.org/stable/c/f8d871523142f7895f250a856f8c4a4181614510"
},
{
"url": "https://git.kernel.org/stable/c/1fd94884174bd20beb1773990fd3b1aa877688d9"
},
{
"url": "https://git.kernel.org/stable/c/7faf14a7b0366f153284db0ad3347c457ea70136"
}
],
"title": "nfsd: clear acl_access/acl_default after releasing them",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-21796",
"datePublished": "2025-02-27T02:18:32.191Z",
"dateReserved": "2024-12-29T08:45:45.768Z",
"dateUpdated": "2026-08-05T11:54:31.388Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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