CWE-362
Allowed-with-ReviewConcurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Abstraction: Class · Status: Draft
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
2900 vulnerabilities reference this CWE, most recent first.
GHSA-8F6M-26FJ-7FM5
Vulnerability from github – Published: 2024-04-25 06:30 – Updated: 2026-05-12 12:31In the Linux kernel, the following vulnerability has been resolved:
af_unix: Fix garbage collector racing against connect()
Garbage collector does not take into account the risk of embryo getting enqueued during the garbage collection. If such embryo has a peer that carries SCM_RIGHTS, two consecutive passes of scan_children() may see a different set of children. Leading to an incorrectly elevated inflight count, and then a dangling pointer within the gc_inflight_list.
sockets are AF_UNIX/SOCK_STREAM S is an unconnected socket L is a listening in-flight socket bound to addr, not in fdtable V's fd will be passed via sendmsg(), gets inflight count bumped
connect(S, addr) sendmsg(S, [V]); close(V) __unix_gc() ---------------- ------------------------- -----------
NS = unix_create1() skb1 = sock_wmalloc(NS) L = unix_find_other(addr) unix_state_lock(L) unix_peer(S) = NS // V count=1 inflight=0
NS = unix_peer(S)
skb2 = sock_alloc()
skb_queue_tail(NS, skb2[V])
// V became in-flight
// V count=2 inflight=1
close(V)
// V count=1 inflight=1
// GC candidate condition met
for u in gc_inflight_list:
if (total_refs == inflight_refs)
add u to gc_candidates
// gc_candidates={L, V}
for u in gc_candidates:
scan_children(u, dec_inflight)
// embryo (skb1) was not
// reachable from L yet, so V's
// inflight remains unchanged
__skb_queue_tail(L, skb1) unix_state_unlock(L) for u in gc_candidates: if (u.inflight) scan_children(u, inc_inflight_move_tail)
// V count=1 inflight=2 (!)
If there is a GC-candidate listening socket, lock/unlock its state. This makes GC wait until the end of any ongoing connect() to that socket. After flipping the lock, a possibly SCM-laden embryo is already enqueued. And if there is another embryo coming, it can not possibly carry SCM_RIGHTS. At this point, unix_inflight() can not happen because unix_gc_lock is already taken. Inflight graph remains unaffected.
{
"affected": [],
"aliases": [
"CVE-2024-26923"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-25T06:15:57Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\naf_unix: Fix garbage collector racing against connect()\n\nGarbage collector does not take into account the risk of embryo getting\nenqueued during the garbage collection. If such embryo has a peer that\ncarries SCM_RIGHTS, two consecutive passes of scan_children() may see a\ndifferent set of children. Leading to an incorrectly elevated inflight\ncount, and then a dangling pointer within the gc_inflight_list.\n\nsockets are AF_UNIX/SOCK_STREAM\nS is an unconnected socket\nL is a listening in-flight socket bound to addr, not in fdtable\nV\u0027s fd will be passed via sendmsg(), gets inflight count bumped\n\nconnect(S, addr)\tsendmsg(S, [V]); close(V)\t__unix_gc()\n----------------\t-------------------------\t-----------\n\nNS = unix_create1()\nskb1 = sock_wmalloc(NS)\nL = unix_find_other(addr)\nunix_state_lock(L)\nunix_peer(S) = NS\n\t\t\t// V count=1 inflight=0\n\n \t\t\tNS = unix_peer(S)\n \t\t\tskb2 = sock_alloc()\n\t\t\tskb_queue_tail(NS, skb2[V])\n\n\t\t\t// V became in-flight\n\t\t\t// V count=2 inflight=1\n\n\t\t\tclose(V)\n\n\t\t\t// V count=1 inflight=1\n\t\t\t// GC candidate condition met\n\n\t\t\t\t\t\tfor u in gc_inflight_list:\n\t\t\t\t\t\t if (total_refs == inflight_refs)\n\t\t\t\t\t\t add u to gc_candidates\n\n\t\t\t\t\t\t// gc_candidates={L, V}\n\n\t\t\t\t\t\tfor u in gc_candidates:\n\t\t\t\t\t\t scan_children(u, dec_inflight)\n\n\t\t\t\t\t\t// embryo (skb1) was not\n\t\t\t\t\t\t// reachable from L yet, so V\u0027s\n\t\t\t\t\t\t// inflight remains unchanged\n__skb_queue_tail(L, skb1)\nunix_state_unlock(L)\n\t\t\t\t\t\tfor u in gc_candidates:\n\t\t\t\t\t\t if (u.inflight)\n\t\t\t\t\t\t scan_children(u, inc_inflight_move_tail)\n\n\t\t\t\t\t\t// V count=1 inflight=2 (!)\n\nIf there is a GC-candidate listening socket, lock/unlock its state. This\nmakes GC wait until the end of any ongoing connect() to that socket. After\nflipping the lock, a possibly SCM-laden embryo is already enqueued. And if\nthere is another embryo coming, it can not possibly carry SCM_RIGHTS. At\nthis point, unix_inflight() can not happen because unix_gc_lock is already\ntaken. Inflight graph remains unaffected.",
"id": "GHSA-8f6m-26fj-7fm5",
"modified": "2026-05-12T12:31:41Z",
"published": "2024-04-25T06:30:35Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-26923"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-613116.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2e2a03787f4f0abc0072350654ab0ef3324d9db3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/343c5372d5e17b306db5f8f3c895539b06e3177f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/47d8ac011fe1c9251070e1bd64cb10b48193ec51"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/507cc232ffe53a352847893f8177d276c3b532a9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a36ae0ec2353015f0f6762e59f4c2dbc0c906423"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b75722be422c276b699200de90527d01c602ea7c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dbdf7bec5c920200077d693193f989cb1513f009"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e76c2678228f6aec74b305ae30c9374cc2f28a51"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8FF9-78X2-C89J
Vulnerability from github – Published: 2026-01-13 18:31 – Updated: 2026-01-13 18:31Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.
{
"affected": [],
"aliases": [
"CVE-2026-20836"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-01-13T18:16:11Z",
"severity": "HIGH"
},
"details": "Concurrent execution using shared resource with improper synchronization (\u0027race condition\u0027) in Graphics Kernel allows an authorized attacker to elevate privileges locally.",
"id": "GHSA-8ff9-78x2-c89j",
"modified": "2026-01-13T18:31:09Z",
"published": "2026-01-13T18:31:09Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20836"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20836"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8FQ6-P869-285X
Vulnerability from github – Published: 2023-12-19 15:30 – Updated: 2023-12-22 12:31When resolving a symlink, a race may occur where the buffer passed to readlink may actually be smaller than necessary.
This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.
{
"affected": [],
"aliases": [
"CVE-2023-6857"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-12-19T14:15:07Z",
"severity": "MODERATE"
},
"details": "When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary. \n*This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.* This vulnerability affects Firefox ESR \u003c 115.6, Thunderbird \u003c 115.6, and Firefox \u003c 121.",
"id": "GHSA-8fq6-p869-285x",
"modified": "2023-12-22T12:31:46Z",
"published": "2023-12-19T15:30:30Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6857"
},
{
"type": "WEB",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1796023"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00020.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/12/msg00021.html"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202401-10"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5581"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5582"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-54"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-55"
},
{
"type": "WEB",
"url": "https://www.mozilla.org/security/advisories/mfsa2023-56"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-8FRR-8V9H-5C7M
Vulnerability from github – Published: 2022-05-01 18:36 – Updated: 2022-05-01 18:36Race condition in nss_ldap, when used in applications that are linked against the pthread library and fork after a call to nss_ldap, might send user data to the wrong process because of improper handling of the LDAP connection. NOTE: this issue was originally reported for Dovecot with the wrong mailboxes being returned, but other applications might also be affected.
{
"affected": [],
"aliases": [
"CVE-2007-5794"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2007-11-13T23:46:00Z",
"severity": "MODERATE"
},
"details": "Race condition in nss_ldap, when used in applications that are linked against the pthread library and fork after a call to nss_ldap, might send user data to the wrong process because of improper handling of the LDAP connection. NOTE: this issue was originally reported for Dovecot with the wrong mailboxes being returned, but other applications might also be affected.",
"id": "GHSA-8frr-8v9h-5c7m",
"modified": "2022-05-01T18:36:44Z",
"published": "2022-05-01T18:36:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2007-5794"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=154314"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=367461"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/38505"
},
{
"type": "WEB",
"url": "https://issues.rpath.com/browse/RPL-1913"
},
{
"type": "WEB",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10625"
},
{
"type": "WEB",
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=453868"
},
{
"type": "WEB",
"url": "http://bugs.gentoo.org/show_bug.cgi?id=198390"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00003.html"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/27670"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/27768"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/27839"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/28061"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/28838"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/29083"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/30352"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/31227"
},
{
"type": "WEB",
"url": "http://secunia.com/advisories/31524"
},
{
"type": "WEB",
"url": "http://security.gentoo.org/glsa/glsa-200711-33.xml"
},
{
"type": "WEB",
"url": "http://support.avaya.com/elmodocs2/security/ASA-2008-332.htm"
},
{
"type": "WEB",
"url": "http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0255"
},
{
"type": "WEB",
"url": "http://www.debian.org/security/2007/dsa-1430"
},
{
"type": "WEB",
"url": "http://www.dovecot.org/list/dovecot/2005-April/006859.html"
},
{
"type": "WEB",
"url": "http://www.dovecot.org/list/dovecot/2005-March/006345.html"
},
{
"type": "WEB",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2008:049"
},
{
"type": "WEB",
"url": "http://www.redhat.com/support/errata/RHSA-2008-0389.html"
},
{
"type": "WEB",
"url": "http://www.redhat.com/support/errata/RHSA-2008-0715.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/archive/1/487985/100/0/threaded"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/26452"
},
{
"type": "WEB",
"url": "http://www.securitytracker.com/id?1020088"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-8FRW-6498-CGQ3
Vulnerability from github – Published: 2022-05-17 03:09 – Updated: 2022-05-17 03:09Race condition in Lenovo System Update (formerly ThinkVantage System Update) before 5.06.0034 uses world-writable permissions for the update files directory, which allows local users to gain privileges by writing to an update file after the signature is validated.
{
"affected": [],
"aliases": [
"CVE-2015-2234"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2015-05-12T19:59:00Z",
"severity": "MODERATE"
},
"details": "Race condition in Lenovo System Update (formerly ThinkVantage System Update) before 5.06.0034 uses world-writable permissions for the update files directory, which allows local users to gain privileges by writing to an update file after the signature is validated.",
"id": "GHSA-8frw-6498-cgq3",
"modified": "2022-05-17T03:09:47Z",
"published": "2022-05-17T03:09:47Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-2234"
},
{
"type": "WEB",
"url": "http://securitytracker.com/id/1032268"
},
{
"type": "WEB",
"url": "http://support.lenovo.com/us/en/product_security/lsu_privilege"
},
{
"type": "WEB",
"url": "http://www.ioactive.com/pdfs/Lenovo_System_Update_Multiple_Privilege_Escalations.pdf"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/74634"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-8FWG-MWP7-29PF
Vulnerability from github – Published: 2022-05-17 05:24 – Updated: 2024-07-03 18:31** DISPUTED ** Race condition in KingSoft Personal Firewall 9 Plus 2009.05.07.70 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-based malware detection, via certain user-space memory changes during hook-handler execution, aka an argument-switch attack or a KHOBE attack. NOTE: this issue is disputed by some third parties because it is a flaw in a protection mechanism for situations where a crafted program has already begun to execute.
{
"affected": [],
"aliases": [
"CVE-2010-5164"
],
"database_specific": {
"cwe_ids": [
"CWE-362",
"CWE-94"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2012-08-25T21:55:00Z",
"severity": "MODERATE"
},
"details": "** DISPUTED ** Race condition in KingSoft Personal Firewall 9 Plus 2009.05.07.70 on Windows XP allows local users to bypass kernel-mode hook handlers, and execute dangerous code that would otherwise be blocked by a handler but not blocked by signature-based malware detection, via certain user-space memory changes during hook-handler execution, aka an argument-switch attack or a KHOBE attack. NOTE: this issue is disputed by some third parties because it is a flaw in a protection mechanism for situations where a crafted program has already begun to execute.",
"id": "GHSA-8fwg-mwp7-29pf",
"modified": "2024-07-03T18:31:17Z",
"published": "2022-05-17T05:24:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2010-5164"
},
{
"type": "WEB",
"url": "http://archives.neohapsis.com/archives/bugtraq/2010-05/0026.html"
},
{
"type": "WEB",
"url": "http://archives.neohapsis.com/archives/fulldisclosure/2010-05/0066.html"
},
{
"type": "WEB",
"url": "http://countermeasures.trendmicro.eu/you-just-cant-trust-a-drunk"
},
{
"type": "WEB",
"url": "http://matousec.com/info/advisories/khobe-8.0-earthquake-for-windows-desktop-security-software.php"
},
{
"type": "WEB",
"url": "http://matousec.com/info/articles/khobe-8.0-earthquake-for-windows-desktop-security-software.php"
},
{
"type": "WEB",
"url": "http://www.f-secure.com/weblog/archives/00001949.html"
},
{
"type": "WEB",
"url": "http://www.osvdb.org/67660"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/39924"
},
{
"type": "WEB",
"url": "http://www.theregister.co.uk/2010/05/07/argument_switch_av_bypass"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-8FWR-97HC-2RCG
Vulnerability from github – Published: 2022-05-24 16:50 – Updated: 2024-04-04 01:20A race condition occurs while processing perf-event which can lead to a use after free condition in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables in MDM9150, MDM9206, MDM9607, MDM9640, MDM9650, MSM8909W, QCS405, QCS605, Qualcomm 215, SD 210/SD 212/SD 205, SD 425, SD 427, SD 430, SD 435, SD 439 / SD 429, SD 450, SD 625, SD 632, SD 636, SD 665, SD 712 / SD 710 / SD 670, SD 730, SD 820A, SD 835, SD 845 / SD 850, SD 855, SDM439, SDM630, SDM660, SDX20, SDX24, Snapdragon_High_Med_2016, SXR1130
{
"affected": [],
"aliases": [
"CVE-2019-2260"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-07-22T14:15:00Z",
"severity": "HIGH"
},
"details": "A race condition occurs while processing perf-event which can lead to a use after free condition in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice \u0026 Music, Snapdragon Wearables in MDM9150, MDM9206, MDM9607, MDM9640, MDM9650, MSM8909W, QCS405, QCS605, Qualcomm 215, SD 210/SD 212/SD 205, SD 425, SD 427, SD 430, SD 435, SD 439 / SD 429, SD 450, SD 625, SD 632, SD 636, SD 665, SD 712 / SD 710 / SD 670, SD 730, SD 820A, SD 835, SD 845 / SD 850, SD 855, SDM439, SDM630, SDM660, SDX20, SDX24, Snapdragon_High_Med_2016, SXR1130",
"id": "GHSA-8fwr-97hc-2rcg",
"modified": "2024-04-04T01:20:00Z",
"published": "2022-05-24T16:50:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-2260"
},
{
"type": "WEB",
"url": "https://www.codeaurora.org/security-bulletin/2019/06/03/june-2019-code-aurora-security-bulletin"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8G22-424R-399R
Vulnerability from github – Published: 2022-05-24 16:55 – Updated: 2022-05-24 16:55In the Android kernel in the video driver there is a use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2019-9458"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-09-06T22:15:00Z",
"severity": "MODERATE"
},
"details": "In the Android kernel in the video driver there is a use after free due to a race condition. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.",
"id": "GHSA-8g22-424r-399r",
"modified": "2022-05-24T16:55:38Z",
"published": "2022-05-24T16:55:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9458"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/pixel/2019-09-01"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00035.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8GF9-J4GP-QQF3
Vulnerability from github – Published: 2023-07-10 18:30 – Updated: 2024-08-21 18:31A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_SESSION_SETUP commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.
{
"affected": [],
"aliases": [
"CVE-2023-32250"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-07-10T16:15:52Z",
"severity": "HIGH"
},
"details": "A flaw was found in the Linux kernel\u0027s ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the processing of SMB2_SESSION_SETUP commands. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this vulnerability to execute code in the context of the kernel.",
"id": "GHSA-8gf9-j4gp-qqf3",
"modified": "2024-08-21T18:31:25Z",
"published": "2023-07-10T18:30:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-32250"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2023-32250"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2208849"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230824-0004"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-23-698"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-8HGG-PMRM-W85W
Vulnerability from github – Published: 2022-05-17 03:46 – Updated: 2025-04-12 12:42Race condition in arch/x86/kvm/x86.c in the Linux kernel before 2.6.38 allows L2 guest OS users to cause a denial of service (L1 guest OS crash) via a crafted instruction that triggers an L2 emulation failure report, a similar issue to CVE-2014-7842.
{
"affected": [],
"aliases": [
"CVE-2010-5313"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2014-11-30T01:59:00Z",
"severity": "MODERATE"
},
"details": "Race condition in arch/x86/kvm/x86.c in the Linux kernel before 2.6.38 allows L2 guest OS users to cause a denial of service (L1 guest OS crash) via a crafted instruction that triggers an L2 emulation failure report, a similar issue to CVE-2014-7842.",
"id": "GHSA-8hgg-pmrm-w85w",
"modified": "2025-04-12T12:42:26Z",
"published": "2022-05-17T03:46:37Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2010-5313"
},
{
"type": "WEB",
"url": "https://github.com/torvalds/linux/commit/fc3a9157d3148ab91039c75423da8ef97be3e105"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1163762"
},
{
"type": "WEB",
"url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=fc3a9157d3148ab91039c75423da8ef97be3e105"
},
{
"type": "WEB",
"url": "http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fc3a9157d3148ab91039c75423da8ef97be3e105"
},
{
"type": "WEB",
"url": "http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00000.html"
},
{
"type": "WEB",
"url": "http://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.38"
},
{
"type": "WEB",
"url": "http://rhn.redhat.com/errata/RHSA-2016-0855.html"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2014/11/13/7"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html"
},
{
"type": "WEB",
"url": "http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/71363"
}
],
"schema_version": "1.4.0",
"severity": []
}
Mitigation
In languages that support it, use synchronization primitives. Only wrap these around critical code to minimize the impact on performance.
Mitigation
Use thread-safe capabilities such as the data access abstraction in Spring.
Mitigation
- Minimize the usage of shared resources in order to remove as much complexity as possible from the control flow and to reduce the likelihood of unexpected conditions occurring.
- Additionally, this will minimize the amount of synchronization necessary and may even help to reduce the likelihood of a denial of service where an attacker may be able to repeatedly trigger a critical section (CWE-400).
Mitigation
When using multithreading and operating on shared variables, only use thread-safe functions.
Mitigation
Use atomic operations on shared variables. Be wary of innocent-looking constructs such as "x++". This may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read, followed by a computation, followed by a write.
Mitigation
Use a mutex if available, but be sure to avoid related weaknesses such as CWE-412.
Mitigation
Avoid double-checked locking (CWE-609) and other implementation errors that arise when trying to avoid the overhead of synchronization.
Mitigation
Disable interrupts or signals over critical parts of the code, but also make sure that the code does not go into a large or infinite loop.
Mitigation
Use the volatile type modifier for critical variables to avoid unexpected compiler optimization or reordering. This does not necessarily solve the synchronization problem, but it can help.
Mitigation MIT-17
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
CAPEC-26: Leveraging Race Conditions
The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file.
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.