CVE-2025-40281
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto
syzbot reported a possible shift-out-of-bounds [1]
Blamed commit added rto_alpha_max and rto_beta_max set to 1000.
It is unclear if some sctp users are setting very large rto_alpha and/or rto_beta.
In order to prevent user regression, perform the test at run time.
Also add READ_ONCE() annotations as sysctl values can change under us.
[1]
Detalles técnicos trazas, registros y código del informe original
UBSAN: shift-out-of-bounds in net/sctp/transport.c:509:41 shift exponent 64 is too large for 32-bit type 'unsigned int' CPU: 0 UID: 0 PID: 16704 Comm: syz.2.2320 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:233 [inline] __ubsan_handle_shift_out_of_bounds+0x27f/0x420 lib/ubsan.c:494 sctp_transport_update_rto.cold+0x1c/0x34b net/sctp/transport.c:509 sctp_check_transmitted+0x11c4/0x1c30 net/sctp/outqueue.c:1502 sctp_outq_sack+0x4ef/0x1b20 net/sctp/outqueue.c:1338 sctp_cmd_process_sack net/sctp/sm_sideeffect.c:840 [inline] sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1372 [inline]
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.22%
- Percentil entre todas las CVEs puntuadas: 11
- 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).
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/0e0413e3315199b23ff4aec295e256034cd0a6e4
- https://git.kernel.org/stable/c/1534ff77757e44bcc4b98d0196bc5c0052fce5fa
- https://git.kernel.org/stable/c/1cfa4eac275cc4875755c1303d48a4ddfe507ca8
- https://git.kernel.org/stable/c/834e65be429c0fa4f9bb5945064bd57f18ed2187
- https://git.kernel.org/stable/c/aaba523dd7b6106526c24b1fd9b5fc35e5aaa88d
- https://git.kernel.org/stable/c/abb086b9a95d0ed3b757ee59964ba3c4e4b2fc1a
- https://git.kernel.org/stable/c/d0d858652834dcf531342c82a0428170aa7c2675
- https://git.kernel.org/stable/c/ed71f801249d2350c77a73dca2c03918a15a62fe
- https://cert-portal.siemens.com/productcert/html/ssa-253495.html
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-40281",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-40281",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-06-16T19:35:24.390907Z"
}
}
]
},
"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": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "0e0413e3315199b23ff4aec295e256034cd0a6e4",
"versionType": "git"
},
{
"status": "affected",
"version": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "834e65be429c0fa4f9bb5945064bd57f18ed2187",
"versionType": "git"
},
{
"status": "affected",
"version": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "abb086b9a95d0ed3b757ee59964ba3c4e4b2fc1a",
"versionType": "git"
},
{
"status": "affected",
"version": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "d0d858652834dcf531342c82a0428170aa7c2675",
"versionType": "git"
},
{
"status": "affected",
"version": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "ed71f801249d2350c77a73dca2c03918a15a62fe",
"versionType": "git"
},
{
"status": "affected",
"version": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "1cfa4eac275cc4875755c1303d48a4ddfe507ca8",
"versionType": "git"
},
{
"status": "affected",
"version": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "aaba523dd7b6106526c24b1fd9b5fc35e5aaa88d",
"versionType": "git"
},
{
"status": "affected",
"version": "b58537a1f5629bdc98a8b9dc2051ce0e952f6b4b",
"lessThan": "1534ff77757e44bcc4b98d0196bc5c0052fce5fa",
"versionType": "git"
}
],
"programFiles": [
"net/sctp/transport.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.16"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.16",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.4.302",
"versionType": "semver",
"lessThanOrEqual": "5.4.*"
},
{
"status": "unaffected",
"version": "5.10.247",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.197",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.159",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.117",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.59",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.17.9",
"versionType": "semver",
"lessThanOrEqual": "6.17.*"
},
{
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/sctp/transport.c"
],
"defaultStatus": "affected"
}
]
},
{
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
"affectedData": [
{
"vendor": "Siemens",
"product": "RUGGEDCOM RST2428P",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "V4.0",
"versionType": "custom"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2025-12-06T22:15:56.113",
"references": [
{
"url": "https://git.kernel.org/stable/c/0e0413e3315199b23ff4aec295e256034cd0a6e4",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/1534ff77757e44bcc4b98d0196bc5c0052fce5fa",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/1cfa4eac275cc4875755c1303d48a4ddfe507ca8",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/834e65be429c0fa4f9bb5945064bd57f18ed2187",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/aaba523dd7b6106526c24b1fd9b5fc35e5aaa88d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/abb086b9a95d0ed3b757ee59964ba3c4e4b2fc1a",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/d0d858652834dcf531342c82a0428170aa7c2675",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ed71f801249d2350c77a73dca2c03918a15a62fe",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://cert-portal.siemens.com/productcert/html/ssa-253495.html",
"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto\n\nsyzbot reported a possible shift-out-of-bounds [1]\n\nBlamed commit added rto_alpha_max and rto_beta_max set to 1000.\n\nIt is unclear if some sctp users are setting very large rto_alpha\nand/or rto_beta.\n\nIn order to prevent user regression, perform the test at run time.\n\nAlso add READ_ONCE() annotations as sysctl values can change under us.\n\n[1]\n\nUBSAN: shift-out-of-bounds in net/sctp/transport.c:509:41\nshift exponent 64 is too large for 32-bit type 'unsigned int'\nCPU: 0 UID: 0 PID: 16704 Comm: syz.2.2320 Not tainted syzkaller #0 PREEMPT(full)\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025\nCall Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120\n ubsan_epilogue lib/ubsan.c:233 [inline]\n __ubsan_handle_shift_out_of_bounds+0x27f/0x420 lib/ubsan.c:494\n sctp_transport_update_rto.cold+0x1c/0x34b net/sctp/transport.c:509\n sctp_check_transmitted+0x11c4/0x1c30 net/sctp/outqueue.c:1502\n sctp_outq_sack+0x4ef/0x1b20 net/sctp/outqueue.c:1338\n sctp_cmd_process_sack net/sctp/sm_sideeffect.c:840 [inline]\n sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1372 [inline]"
}
],
"lastModified": "2026-06-17T09:21:35.297",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}