CVE-2026-72299
Estado: RecibidaCrítica (9.8)—
In the Linux kernel, the following vulnerability has been resolved:
tipc: restrict socket queue dumps in enqueue tracepoints
tipc_sk_enqueue() runs with sk->sk_lock.slock held while the socket is owned by user context. The spinlock protects the backlog queue in this path, but it does not serialize against the socket owner consuming or purging sk_receive_queue.
The TIPC_DUMP_ALL tracepoints in tipc_sk_enqueue() also dump sk_receive_queue and can therefore dereference skbs that the socket owner has already dequeued or freed. Restrict these dumps to TIPC_DUMP_SK_BKLGQ, which matches the queue protected by the held spinlock.
Leer descripción completaMostrar menos
Keep the change limited to the enqueue path, where the unsafe queue dump is reachable while the socket is owned by user context.
Detalles técnicos trazas, registros y código del informe original
KASAN reported:
CPU: 14 UID: 0 PID: 1050 Comm: tipc3 Not tainted 7.1.0-rc6+ #126 PREEMPT(lazy)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
Call Trace:
<TASK>
dump_stack_lvl+0x76/0xa0 lib/dump_stack.c:123
print_report+0xce/0x5b0 mm/kasan/report.c:482
kasan_report+0xc6/0x100 mm/kasan/report.c:597
__asan_report_load4_noabort+0x14/0x30 mm/kasan/report_generic.c:380
tipc_skb_dump+0x1327/0x16f0 net/tipc/trace.c:73
tipc_list_dump+0x208/0x2e0 net/tipc/trace.c:187
tipc_sk_dump+0xaf6/0xd60 net/tipc/socket.c:3996
trace_event_raw_event_tipc_sk_class+0x312/0x5a0 net/tipc/trace.h:188
tipc_sk_rcv+0xb1d/0x1d50 net/tipc/socket.c:2497
tipc_node_xmit+0x1c3/0x1440 net/tipc/node.c:1689
__tipc_sendmsg+0x97a/0x1440 net/tipc/socket.c:1512
tipc_sendmsg+0x52/0x80 net/tipc/socket.c:1400
sock_sendmsg+0x2f6/0x3e0 net/socket.c:825
splice_to_socket+0x7f9/0x1010 fs/splice.c:884
do_splice+0xe21/0x2330 fs/splice.c:936
__do_splice+0x153/0x260 fs/splice.c:1431
__x64_sys_splice+0x150/0x230 fs/splice.c:1616
x64_sys_call+0xeb5/0x2790 arch/x86/entry/syscall_64.c:41
do_syscall_64+0xf3/0x620 arch/x86/entry/syscall_64.c:63
entry_SYSCALL_64_after_hwframe+0x76/0x7e arch/x86/entry/entry_64.S:130
RIP: 0033:0x71624e8aafe2
Code: 08 0f 85 71 3a ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 66
RSP: 002b:0000716157ffed68 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000716157fff6c0 RCX: 000071624e8aafe2
RDX: 000000000000005f RSI: 0000000000000000 RDI: 0000000000000066
RBP: 0000716157ffed90 R08: 0000000000008000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffff00
R13: 0000000000000021 R14: 0000000000000000 R15: 00007fff89799c40
</TASK>CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.74%
- Percentil entre todas las CVEs puntuadas: 53
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access60 %
Inferido por reglas deterministas a partir del vector CVSS y la CWE. Solo orientativo.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/12876864f9de5fa6f611a30c6c17e405a773bf0a
- https://git.kernel.org/stable/c/258fb15b30db4f3941ab335d5e02f744baf1da54
- https://git.kernel.org/stable/c/273ff83c49b82e4267373adbe629e6ee8aeaa16c
- https://git.kernel.org/stable/c/61a55fa24a5d737436018764a647fe5b6cb36371
- https://git.kernel.org/stable/c/6acbbe54215d5f4251593000cff2bf51d6748713
- https://git.kernel.org/stable/c/acd7df8d955480a6f6e5bb809da67b1500cc3cf4
- https://git.kernel.org/stable/c/ae5d0d9ce767b20a5580bb6dc5e06f3e1b8a0fb0
- https://git.kernel.org/stable/c/b9e100815f4b55e9ccaf6af9a3aba173eb13d381
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-72299",
"cveTags": [],
"metrics": {
"cvssMetricV31": [
{
"type": "Secondary",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "ae5d0d9ce767b20a5580bb6dc5e06f3e1b8a0fb0",
"versionType": "git"
},
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "273ff83c49b82e4267373adbe629e6ee8aeaa16c",
"versionType": "git"
},
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "258fb15b30db4f3941ab335d5e02f744baf1da54",
"versionType": "git"
},
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "12876864f9de5fa6f611a30c6c17e405a773bf0a",
"versionType": "git"
},
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "b9e100815f4b55e9ccaf6af9a3aba173eb13d381",
"versionType": "git"
},
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "61a55fa24a5d737436018764a647fe5b6cb36371",
"versionType": "git"
},
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "6acbbe54215d5f4251593000cff2bf51d6748713",
"versionType": "git"
},
{
"status": "affected",
"version": "01e661ebfbad40e6280fb8ec25f2861d39ba4387",
"lessThan": "acd7df8d955480a6f6e5bb809da67b1500cc3cf4",
"versionType": "git"
}
],
"programFiles": [
"net/tipc/socket.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.0"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.266",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.217",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.184",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.148",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/tipc/socket.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-08-15T06:22:02.567",
"references": [
{
"url": "https://git.kernel.org/stable/c/12876864f9de5fa6f611a30c6c17e405a773bf0a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/258fb15b30db4f3941ab335d5e02f744baf1da54",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/273ff83c49b82e4267373adbe629e6ee8aeaa16c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/61a55fa24a5d737436018764a647fe5b6cb36371",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/6acbbe54215d5f4251593000cff2bf51d6748713",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/acd7df8d955480a6f6e5bb809da67b1500cc3cf4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ae5d0d9ce767b20a5580bb6dc5e06f3e1b8a0fb0",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b9e100815f4b55e9ccaf6af9a3aba173eb13d381",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntipc: restrict socket queue dumps in enqueue tracepoints\n\ntipc_sk_enqueue() runs with sk->sk_lock.slock held while the socket is\nowned by user context. The spinlock protects the backlog queue in this\npath, but it does not serialize against the socket owner consuming or\npurging sk_receive_queue.\n\nKASAN reported:\n\n CPU: 14 UID: 0 PID: 1050 Comm: tipc3 Not tainted 7.1.0-rc6+ #126 PREEMPT(lazy)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n Call Trace:\n <TASK>\n dump_stack_lvl+0x76/0xa0 lib/dump_stack.c:123\n print_report+0xce/0x5b0 mm/kasan/report.c:482\n kasan_report+0xc6/0x100 mm/kasan/report.c:597\n __asan_report_load4_noabort+0x14/0x30 mm/kasan/report_generic.c:380\n tipc_skb_dump+0x1327/0x16f0 net/tipc/trace.c:73\n tipc_list_dump+0x208/0x2e0 net/tipc/trace.c:187\n tipc_sk_dump+0xaf6/0xd60 net/tipc/socket.c:3996\n trace_event_raw_event_tipc_sk_class+0x312/0x5a0 net/tipc/trace.h:188\n tipc_sk_rcv+0xb1d/0x1d50 net/tipc/socket.c:2497\n tipc_node_xmit+0x1c3/0x1440 net/tipc/node.c:1689\n __tipc_sendmsg+0x97a/0x1440 net/tipc/socket.c:1512\n tipc_sendmsg+0x52/0x80 net/tipc/socket.c:1400\n sock_sendmsg+0x2f6/0x3e0 net/socket.c:825\n splice_to_socket+0x7f9/0x1010 fs/splice.c:884\n do_splice+0xe21/0x2330 fs/splice.c:936\n __do_splice+0x153/0x260 fs/splice.c:1431\n __x64_sys_splice+0x150/0x230 fs/splice.c:1616\n x64_sys_call+0xeb5/0x2790 arch/x86/entry/syscall_64.c:41\n do_syscall_64+0xf3/0x620 arch/x86/entry/syscall_64.c:63\n entry_SYSCALL_64_after_hwframe+0x76/0x7e arch/x86/entry/entry_64.S:130\n RIP: 0033:0x71624e8aafe2\n Code: 08 0f 85 71 3a ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 66 2e 0f 1f 84 00 00 00 00 00 66\n RSP: 002b:0000716157ffed68 EFLAGS: 00000246 ORIG_RAX: 0000000000000113\n RAX: ffffffffffffffda RBX: 0000716157fff6c0 RCX: 000071624e8aafe2\n RDX: 000000000000005f RSI: 0000000000000000 RDI: 0000000000000066\n RBP: 0000716157ffed90 R08: 0000000000008000 R09: 0000000000000001\n R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffff00\n R13: 0000000000000021 R14: 0000000000000000 R15: 00007fff89799c40\n </TASK>\n\nThe TIPC_DUMP_ALL tracepoints in tipc_sk_enqueue() also dump\nsk_receive_queue and can therefore dereference skbs that the socket\nowner has already dequeued or freed. Restrict these dumps to\nTIPC_DUMP_SK_BKLGQ, which matches the queue protected by the held\nspinlock.\n\nKeep the change limited to the enqueue path, where the unsafe queue dump\nis reachable while the socket is owned by user context."
}
],
"lastModified": "2026-08-23T13:16:43.057",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}