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ALSA-2025:22388 (CVE-2023-53513)
Vulnerability from osv_almalinux – Published: 2025-12-01 00:00 – Updated: 2026-10-25 23:59 – Source websiteThe kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
- kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)
- kernel: smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)
- kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883)
- kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898)
- kernel: nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)
- kernel: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect() (CVE-2025-39955)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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"details": "The kernel packages contain the Linux kernel, the core of any Linux operating system. \n\nSecurity Fix(es): \n\n * kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)\n * kernel: smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)\n * kernel: mm/memory-failure: fix VM_BUG_ON_PAGE(PagePoisoned(page)) when unpoison memory (CVE-2025-39883)\n * kernel: e1000e: fix heap overflow in e1000_set_eeprom (CVE-2025-39898)\n * kernel: nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)\n * kernel: tcp: Clear tcp_sk(sk)-\u003efastopen_rsk in tcp_disconnect() (CVE-2025-39955)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
"id": "ALSA-2025:22388",
"modified": "2026-10-25T23:59:41Z",
"published": "2025-12-01T00:00:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://access.redhat.com/errata/RHSA-2025:22388"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2023-53513"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-38724"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-39825"
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{
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"url": "https://access.redhat.com/security/cve/CVE-2025-39883"
},
{
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"url": "https://access.redhat.com/security/cve/CVE-2025-39898"
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{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2025-39955"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2393172"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2395792"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2397553"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2400598"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2400795"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/2402699"
},
{
"type": "ADVISORY",
"url": "https://errata.almalinux.org/8/ALSA-2025-22388.html"
},
{
"type": "REPORT",
"url": "https://www.redhat.com/security/data/cve/CVE-2025-40186.html"
}
],
"related": [
"CVE-2023-53513",
"CVE-2025-38724",
"CVE-2025-39825",
"CVE-2025-39883",
"CVE-2025-39898",
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"schema_version": "1.7.0",
"summary": "Moderate: kernel security update",
"upstream": [
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CVE-2023-53513 (GCVE-0-2023-53513)
Vulnerability from cvelistv5 – Published: 2025-10-01 11:46 – Updated: 2026-06-11 18:44| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
b9c495bb6d8edc719fd23af2ac67de8303cfc1e8 , < 52851d0c3354b397c11d31dfeb8b2a2fc85a0002
(git)
Affected: b9c495bb6d8edc719fd23af2ac67de8303cfc1e8 , < fab766c8a1aff715bce7075aab40e780266f8e1a (git) Affected: b9c495bb6d8edc719fd23af2ac67de8303cfc1e8 , < ffb75ffaa68723276365d0f9d00b03362b750657 (git) Affected: b9c495bb6d8edc719fd23af2ac67de8303cfc1e8 , < 55793ea54d77719a071b1ccc05a05056e3b5e009 (git) |
|
| Linux | Linux |
Affected:
4.1
Unaffected: 0 , < 4.1 (semver) Unaffected: 5.15.113 , ≤ 5.15.* (semver) Unaffected: 6.1.30 , ≤ 6.1.* (semver) Unaffected: 6.3.4 , ≤ 6.3.* (semver) Unaffected: 6.4 , ≤ * (original_commit_for_fix) |
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CVE-2025-38724 (GCVE-0-2025-38724)
Vulnerability from cvelistv5 – Published: 2025-09-04 15:33 – Updated: 2026-10-15 01:07| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/3f252a73e81aa0166… | |
| https://git.kernel.org/stable/c/d35ac850410966010… | |
| https://git.kernel.org/stable/c/f3aac6cf390d8b80e… | |
| https://git.kernel.org/stable/c/22f45cedf281e6171… | |
| https://git.kernel.org/stable/c/d71abd1ae4e041370… | |
| https://git.kernel.org/stable/c/74ad36ed60df561a3… | |
| https://git.kernel.org/stable/c/36e83eda90e0e4ac5… | |
| https://git.kernel.org/stable/c/571a5e46c71490285… | |
| https://git.kernel.org/stable/c/908e4ead7f757504d… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… |
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
d20c11d86d8f821a64eac7d6c8f296f06d935f4f , < 3f252a73e81aa01660cb426735eab932e6182e8d
(git)
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|
| Linux | Linux |
Affected:
3.17
Unaffected: 0 , < 3.17 (semver) Unaffected: 5.4.297 , ≤ 5.4.* (semver) Unaffected: 5.10.241 , ≤ 5.10.* (semver) Unaffected: 5.15.190 , ≤ 5.15.* (semver) Unaffected: 6.1.149 , ≤ 6.1.* (semver) Unaffected: 6.6.103 , ≤ 6.6.* (semver) Unaffected: 6.12.43 , ≤ 6.12.* (semver) Unaffected: 6.15.11 , ≤ 6.15.* (semver) Unaffected: 6.16.2 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC CN 4100 |
Affected:
0 , < V5.0
(custom)
|
|
| 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)
|
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CVE-2025-39825 (GCVE-0-2025-39825)
Vulnerability from cvelistv5 – Published: 2025-09-16 13:00 – Updated: 2026-08-05 12:05| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/c9e7de284da0be5b4… | |
| https://git.kernel.org/stable/c/24b9ed739c8c5b464… | |
| https://git.kernel.org/stable/c/c9991af5e09924f6f… | |
| https://git.kernel.org/stable/c/289f945acb20b9b54… | |
| https://git.kernel.org/stable/c/d84291fc7453df788… | |
| https://lists.debian.org/debian-lts-announce/2025… | |
| https://cert-portal.siemens.com/productcert/html/… |
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
78c09634f7dc061a3bd09704cdbebb3762a45cdf , < c9e7de284da0be5b44dbe79d71573f9f7f9b144c
(git)
Affected: 78c09634f7dc061a3bd09704cdbebb3762a45cdf , < 24b9ed739c8c5b464d983e12cf308982f3ae93c2 (git) Affected: 78c09634f7dc061a3bd09704cdbebb3762a45cdf , < c9991af5e09924f6f3b3e6996a5e09f9504b4358 (git) Affected: 78c09634f7dc061a3bd09704cdbebb3762a45cdf , < 289f945acb20b9b54fe4d13895e44aa58965ddb2 (git) Affected: 78c09634f7dc061a3bd09704cdbebb3762a45cdf , < d84291fc7453df7881a970716f8256273aca5747 (git) |
|
| Linux | Linux |
Affected:
5.13
Unaffected: 0 , < 5.13 (semver) Unaffected: 6.1.150 , ≤ 6.1.* (semver) Unaffected: 6.6.104 , ≤ 6.6.* (semver) Unaffected: 6.12.45 , ≤ 6.12.* (semver) Unaffected: 6.16.5 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC CN 4100 |
Affected:
0 , < V5.0
(custom)
|
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CVE-2025-39883 (GCVE-0-2025-39883)
Vulnerability from cvelistv5 – Published: 2025-09-23 06:00 – Updated: 2026-06-11 18:44| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/8e01ea186a52c9069… | |
| https://git.kernel.org/stable/c/fb65803ccff37cf91… | |
| https://git.kernel.org/stable/c/99f7048957f5ae3ce… | |
| https://git.kernel.org/stable/c/e4ec6def5643a1c95… | |
| https://git.kernel.org/stable/c/3d278e89c2ea62b1a… | |
| https://git.kernel.org/stable/c/7618fd443aa4cfa55… | |
| https://git.kernel.org/stable/c/63a327a2375a8ce7a… | |
| https://git.kernel.org/stable/c/d613f53c83ec47089… | |
| https://lists.debian.org/debian-lts-announce/2025… |
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < 8e01ea186a52c90694c08a9ff57bea1b0e78256a
(git)
Affected: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < fb65803ccff37cf9123c50c1c02efd1ed73c4ed5 (git) Affected: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < 99f7048957f5ae3cee1c01189147e73a9a96de02 (git) Affected: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < e4ec6def5643a1c9511115b3884eb879572294c6 (git) Affected: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < 3d278e89c2ea62b1aaa4b0d8a9766a35b3a3164a (git) Affected: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < 7618fd443aa4cfa553a64cacf5721581653ee7b0 (git) Affected: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < 63a327a2375a8ce7a47dec5aaa4d8a9ae0a00b96 (git) Affected: f1dd2cd13c4bbbc9a7c4617b3b034fa643de98fe , < d613f53c83ec47089c4e25859d5e8e0359f6f8da (git) |
|
| Linux | Linux |
Affected:
4.13
Unaffected: 0 , < 4.13 (semver) Unaffected: 5.4.300 , ≤ 5.4.* (semver) Unaffected: 5.10.245 , ≤ 5.10.* (semver) Unaffected: 5.15.194 , ≤ 5.15.* (semver) Unaffected: 6.1.153 , ≤ 6.1.* (semver) Unaffected: 6.6.107 , ≤ 6.6.* (semver) Unaffected: 6.12.48 , ≤ 6.12.* (semver) Unaffected: 6.16.8 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
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CVE-2025-39898 (GCVE-0-2025-39898)
Vulnerability from cvelistv5 – Published: 2025-10-01 07:42 – Updated: 2025-10-24 11:41This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
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CVE-2025-39955 (GCVE-0-2025-39955)
Vulnerability from cvelistv5 – Published: 2025-10-09 09:47 – Updated: 2026-10-15 01:08| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/7ec092a91ff351dcd… | |
| https://git.kernel.org/stable/c/a4378dedd6e07e62f… | |
| https://git.kernel.org/stable/c/33a4fdf0b4a25f8ce… | |
| https://git.kernel.org/stable/c/17d69972757781419… | |
| https://git.kernel.org/stable/c/dfd06131107e7b699… | |
| https://git.kernel.org/stable/c/fa4749c065644af4d… | |
| https://git.kernel.org/stable/c/ae313d14b45eca7a6… | |
| https://git.kernel.org/stable/c/45c8a6cc2bcd780e6… | |
| https://cert-portal.siemens.com/productcert/html/… | |
| https://cert-portal.siemens.com/productcert/html/… |
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
8336886f786fdacbc19b719c1f7ea91eb70706d4 , < 7ec092a91ff351dcde89c23e795b73a328274db6
(git)
Affected: 8336886f786fdacbc19b719c1f7ea91eb70706d4 , < a4378dedd6e07e62f2fccb17d78c9665718763d0 (git) Affected: 8336886f786fdacbc19b719c1f7ea91eb70706d4 , < 33a4fdf0b4a25f8ce65380c3b0136b407ca57609 (git) Affected: 8336886f786fdacbc19b719c1f7ea91eb70706d4 , < 17d699727577814198d744d6afe54735c6b54c99 (git) Affected: 8336886f786fdacbc19b719c1f7ea91eb70706d4 , < dfd06131107e7b699ef1e2a24ed2f7d17c917753 (git) Affected: 8336886f786fdacbc19b719c1f7ea91eb70706d4 , < fa4749c065644af4db496b338452a69a3e5147d9 (git) Affected: 8336886f786fdacbc19b719c1f7ea91eb70706d4 , < ae313d14b45eca7a6bb29cb9bf396d977e7d28fb (git) Affected: 8336886f786fdacbc19b719c1f7ea91eb70706d4 , < 45c8a6cc2bcd780e634a6ba8e46bffbdf1fc5c01 (git) |
|
| Linux | Linux |
Affected:
3.7
Unaffected: 0 , < 3.7 (semver) Unaffected: 5.4.300 , ≤ 5.4.* (semver) Unaffected: 5.10.245 , ≤ 5.10.* (semver) Unaffected: 5.15.194 , ≤ 5.15.* (semver) Unaffected: 6.1.154 , ≤ 6.1.* (semver) Unaffected: 6.6.108 , ≤ 6.6.* (semver) Unaffected: 6.12.49 , ≤ 6.12.* (semver) Unaffected: 6.16.9 , ≤ 6.16.* (semver) Unaffected: 6.17 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.7 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.7 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.7 , < *
(custom)
|
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: Clear tcp_sk(sk)-\u003efastopen_rsk in tcp_disconnect().\n\nsyzbot reported the splat below where a socket had tcp_sk(sk)-\u003efastopen_rsk\nin the TCP_ESTABLISHED state. [0]\n\nsyzbot reused the server-side TCP Fast Open socket as a new client before\nthe TFO socket completes 3WHS:\n\n 1. accept()\n 2. connect(AF_UNSPEC)\n 3. connect() to another destination\n\nAs of accept(), sk-\u003esk_state is TCP_SYN_RECV, and tcp_disconnect() changes\nit to TCP_CLOSE and makes connect() possible, which restarts timers.\n\nSince tcp_disconnect() forgot to clear tcp_sk(sk)-\u003efastopen_rsk, the\nretransmit timer triggered the warning and the intended packet was not\nretransmitted.\n\nLet\u0027s call reqsk_fastopen_remove() in tcp_disconnect().\n\n[0]:\nWARNING: CPU: 2 PID: 0 at net/ipv4/tcp_timer.c:542 tcp_retransmit_timer (net/ipv4/tcp_timer.c:542 (discriminator 7))\nModules linked in:\nCPU: 2 UID: 0 PID: 0 Comm: swapper/2 Not tainted 6.17.0-rc5-g201825fb4278 #62 PREEMPT(voluntary)\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nRIP: 0010:tcp_retransmit_timer (net/ipv4/tcp_timer.c:542 (discriminator 7))\nCode: 41 55 41 54 55 53 48 8b af b8 08 00 00 48 89 fb 48 85 ed 0f 84 55 01 00 00 0f b6 47 12 3c 03 74 0c 0f b6 47 12 3c 04 74 04 90 \u003c0f\u003e 0b 90 48 8b 85 c0 00 00 00 48 89 ef 48 8b 40 30 e8 6a 4f 06 3e\nRSP: 0018:ffffc900002f8d40 EFLAGS: 00010293\nRAX: 0000000000000002 RBX: ffff888106911400 RCX: 0000000000000017\nRDX: 0000000002517619 RSI: ffffffff83764080 RDI: ffff888106911400\nRBP: ffff888106d5c000 R08: 0000000000000001 R09: ffffc900002f8de8\nR10: 00000000000000c2 R11: ffffc900002f8ff8 R12: ffff888106911540\nR13: ffff888106911480 R14: ffff888106911840 R15: ffffc900002f8de0\nFS: 0000000000000000(0000) GS:ffff88907b768000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 00007f8044d69d90 CR3: 0000000002c30003 CR4: 0000000000370ef0\nCall Trace:\n \u003cIRQ\u003e\n tcp_write_timer (net/ipv4/tcp_timer.c:738)\n call_timer_fn (kernel/time/timer.c:1747)\n __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2372)\n timer_expire_remote (kernel/time/timer.c:2385 kernel/time/timer.c:2376 kernel/time/timer.c:2135)\n tmigr_handle_remote_up (kernel/time/timer_migration.c:944 kernel/time/timer_migration.c:1035)\n __walk_groups.isra.0 (kernel/time/timer_migration.c:533 (discriminator 1))\n tmigr_handle_remote (kernel/time/timer_migration.c:1096)\n handle_softirqs (./arch/x86/include/asm/jump_label.h:36 ./include/trace/events/irq.h:142 kernel/softirq.c:580)\n irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680 kernel/softirq.c:696)\n sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 (discriminator 35) arch/x86/kernel/apic/apic.c:1050 (discriminator 35))\n \u003c/IRQ\u003e"
}
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"url": "https://git.kernel.org/stable/c/17d699727577814198d744d6afe54735c6b54c99"
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"title": "tcp: Clear tcp_sk(sk)-\u003efastopen_rsk in tcp_disconnect().",
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CVE-2025-40186 (GCVE-0-2025-40186)
Vulnerability from cvelistv5 – Published: 2025-11-12 21:56 – Updated: 2026-10-15 22:02| URL | Tags |
|---|---|
| https://git.kernel.org/stable/c/e359b742eac1eac75… | |
| https://git.kernel.org/stable/c/ff6a8883f96a5bc74… | |
| https://git.kernel.org/stable/c/eb85ad5f23268d64b… | |
| https://git.kernel.org/stable/c/643a94b0cf767325e… | |
| https://git.kernel.org/stable/c/422c1c173c39bbbae… | |
| https://git.kernel.org/stable/c/c11ace909e8731182… | |
| https://git.kernel.org/stable/c/64dc47a13aa3d9daf… | |
| https://git.kernel.org/stable/c/2e7cbbbe3d61c6360… |
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
7ec092a91ff351dcde89c23e795b73a328274db6 , < e359b742eac1eac75cff4e38ee2e8cea492acd9b
(git)
Affected: a4378dedd6e07e62f2fccb17d78c9665718763d0 , < ff6a8883f96a5bc74241ce5b3d431a6dcfa2124d (git) Affected: 33a4fdf0b4a25f8ce65380c3b0136b407ca57609 , < eb85ad5f23268d64b037bfb545cbcba3752f90c7 (git) Affected: 17d699727577814198d744d6afe54735c6b54c99 , < 643a94b0cf767325e953591c212be2eb826b9d7f (git) Affected: dfd06131107e7b699ef1e2a24ed2f7d17c917753 , < 422c1c173c39bbbae1e0eaaf8aefe40b2596233b (git) Affected: fa4749c065644af4db496b338452a69a3e5147d9 , < c11ace909e873118295e9eb22dc8c58b0b50eb32 (git) Affected: 45c8a6cc2bcd780e634a6ba8e46bffbdf1fc5c01 , < 64dc47a13aa3d9daf7cec29b44dca8e22a6aea15 (git) Affected: 45c8a6cc2bcd780e634a6ba8e46bffbdf1fc5c01 , < 2e7cbbbe3d61c63606994b7ff73c72537afe2e1c (git) Affected: ae313d14b45eca7a6bb29cb9bf396d977e7d28fb (git) Affected: 5.4.300 , < 5.4.301 (semver) Affected: 5.10.245 , < 5.10.246 (semver) Affected: 5.15.194 , < 5.15.195 (semver) Affected: 6.1.154 , < 6.1.157 (semver) Affected: 6.6.108 , < 6.6.113 (semver) Affected: 6.12.49 , < 6.12.54 (semver) Affected: 6.16.9 , < 6.17 (semver) |
|
| Linux | Linux |
Affected:
6.17
Unaffected: 0 , < 6.17 (semver) Unaffected: 5.4.301 , ≤ 5.4.* (semver) Unaffected: 5.10.246 , ≤ 5.10.* (semver) Unaffected: 5.15.195 , ≤ 5.15.* (semver) Unaffected: 6.1.157 , ≤ 6.1.* (semver) Unaffected: 6.6.113 , ≤ 6.6.* (semver) Unaffected: 6.12.54 , ≤ 6.12.* (semver) Unaffected: 6.17.4 , ≤ 6.17.* (semver) Unaffected: 6.18 , ≤ * (original_commit_for_fix) |
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"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-15T21:57:46.472825Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-15T22:02:39.982Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
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{
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{
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},
{
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"product": "Linux",
"programFiles": [
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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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"status": "unaffected",
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},
{
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},
{
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{
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},
{
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{
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},
{
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"status": "unaffected",
"version": "6.17.4",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
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{
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"vulnerable": true
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],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntcp: Don\u0027t call reqsk_fastopen_remove() in tcp_conn_request().\n\nsyzbot reported the splat below in tcp_conn_request(). [0]\n\nIf a listener is close()d while a TFO socket is being processed in\ntcp_conn_request(), inet_csk_reqsk_queue_add() does not set reqsk-\u003esk\nand calls inet_child_forget(), which calls tcp_disconnect() for the\nTFO socket.\n\nAfter the cited commit, tcp_disconnect() calls reqsk_fastopen_remove(),\nwhere reqsk_put() is called due to !reqsk-\u003esk.\n\nThen, reqsk_fastopen_remove() in tcp_conn_request() decrements the\nlast req-\u003ersk_refcnt and frees reqsk, and __reqsk_free() at the\ndrop_and_free label causes the refcount underflow for the listener\nand double-free of the reqsk.\n\nLet\u0027s remove reqsk_fastopen_remove() in tcp_conn_request().\n\nNote that other callers make sure tp-\u003efastopen_rsk is not NULL.\n\n[0]:\nrefcount_t: underflow; use-after-free.\nWARNING: CPU: 12 PID: 5563 at lib/refcount.c:28 refcount_warn_saturate (lib/refcount.c:28)\nModules linked in:\nCPU: 12 UID: 0 PID: 5563 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025\nRIP: 0010:refcount_warn_saturate (lib/refcount.c:28)\nCode: ab e8 8e b4 98 ff 0f 0b c3 cc cc cc cc cc 80 3d a4 e4 d6 01 00 75 9c c6 05 9b e4 d6 01 01 48 c7 c7 e8 df fb ab e8 6a b4 98 ff \u003c0f\u003e 0b e9 03 5b 76 00 cc 80 3d 7d e4 d6 01 00 0f 85 74 ff ff ff c6\nRSP: 0018:ffffa79fc0304a98 EFLAGS: 00010246\nRAX: d83af4db1c6b3900 RBX: ffff9f65c7a69020 RCX: d83af4db1c6b3900\nRDX: 0000000000000000 RSI: 00000000ffff7fff RDI: ffffffffac78a280\nRBP: 000000009d781b60 R08: 0000000000007fff R09: ffffffffac6ca280\nR10: 0000000000017ffd R11: 0000000000000004 R12: ffff9f65c7b4f100\nR13: ffff9f65c7d23c00 R14: ffff9f65c7d26000 R15: ffff9f65c7a64ef8\nFS: 00007f9f962176c0(0000) GS:ffff9f65fcf00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000200000000180 CR3: 000000000dbbe006 CR4: 0000000000372ef0\nCall Trace:\n \u003cIRQ\u003e\n tcp_conn_request (./include/linux/refcount.h:400 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/sock.h:1965 ./include/net/request_sock.h:131 net/ipv4/tcp_input.c:7301)\n tcp_rcv_state_process (net/ipv4/tcp_input.c:6708)\n tcp_v6_do_rcv (net/ipv6/tcp_ipv6.c:1670)\n tcp_v6_rcv (net/ipv6/tcp_ipv6.c:1906)\n ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:438)\n ip6_input (net/ipv6/ip6_input.c:500)\n ipv6_rcv (net/ipv6/ip6_input.c:311)\n __netif_receive_skb (net/core/dev.c:6104)\n process_backlog (net/core/dev.c:6456)\n __napi_poll (net/core/dev.c:7506)\n net_rx_action (net/core/dev.c:7569 net/core/dev.c:7696)\n handle_softirqs (kernel/softirq.c:579)\n do_softirq (kernel/softirq.c:480)\n \u003c/IRQ\u003e"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable code is in the TCP/IP stack\u0027s inbound SYN-processing path (tcp_v6_rcv \u2192 tcp_rcv_state_process \u2192 tcp_conn_request), triggered by a received TCP Fast Open SYN packet from a remote peer.\nAC:H - Triggering requires the listener socket to transition out of TCP_LISTEN (a local close()/shutdown()) at the exact moment an inbound TFO SYN is being processed; a remote attacker cannot control the timing of that close, so success depends on conditions beyond their control.\nPR:N - The TFO SYN is processed pre-connection with no authentication; an unauthenticated remote attacker needs no privileges to reach tcp_conn_request().\nUI:N - The bug is triggered purely by network packet processing racing with a listener close; no victim interaction is required.\nS:U - The corruption stays within the kernel\u0027s own memory/security authority (request_sock slab and listener refcount); no VM/IOMMU/sandbox boundary is crossed.\nC:H - The refcount underflow yields a use-after-free/double-free of a request_sock, giving an attacker control over freed-object contents that can be leveraged to read adjacent kernel memory.\nI:H - The double-free/UAF is a heap-corruption primitive that can be groomed into an arbitrary-write / control-flow-hijack, so integrity impact is high.\nA:H - The refcount underflow and double-free reliably corrupt kernel memory and crash the kernel (oops/panic in softirq context), a high availability impact."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T12:08:24.563Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"url": "https://git.kernel.org/stable/c/e359b742eac1eac75cff4e38ee2e8cea492acd9b"
},
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"url": "https://git.kernel.org/stable/c/ff6a8883f96a5bc74241ce5b3d431a6dcfa2124d"
},
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},
{
"url": "https://git.kernel.org/stable/c/643a94b0cf767325e953591c212be2eb826b9d7f"
},
{
"url": "https://git.kernel.org/stable/c/422c1c173c39bbbae1e0eaaf8aefe40b2596233b"
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{
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},
{
"url": "https://git.kernel.org/stable/c/64dc47a13aa3d9daf7cec29b44dca8e22a6aea15"
},
{
"url": "https://git.kernel.org/stable/c/2e7cbbbe3d61c63606994b7ff73c72537afe2e1c"
}
],
"title": "tcp: Don\u0027t call reqsk_fastopen_remove() in tcp_conn_request().",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2025-40186",
"datePublished": "2025-11-12T21:56:29.033Z",
"dateReserved": "2025-04-16T07:20:57.177Z",
"dateUpdated": "2026-10-15T22:02:39.982Z",
"state": "PUBLISHED"
},
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}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.