CVE-2026-98453
Estado: RecibidaSin puntuar—
Gravedad—Sin puntuar
Probabilidad de explotación0.17 %mayor que el 6 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:
smb: client: close handle after create-context parsing failure
SMB2_open() contabiliza una respuesta CREATE correcta como una apertura remota antes de analizar sus contextos de creación. Si smb2_parse_contexts() rechaza datos de contexto malformados, SMB2_open() retorna sin cerrar el identificador, lo que deja el identificador abierto en el servidor y num_remote_opens elevado.
Cerrar el identificador tras un fallo de análisis de contextos posterior a CREATE, de modo que la ruta de error libere el recurso remoto y equilibre el contador de aperturas.
Traducción automática del texto original de NVD (en inglés).
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
- 0.17 %
- Percentil entre todas las CVEs puntuadas
- 6
- Fecha de la puntuación
- 20/10/2026
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
Mostrar las 4 referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-98453",
"cveTags": [],
"metrics": {},
"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": "af1689a9b7701d9907dfc84d2a4b57c4bc907144",
"lessThan": "80c67cc71d32ccafc89a29b669243b40d81b930f",
"versionType": "git"
},
{
"status": "affected",
"version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144",
"lessThan": "f09875ff901e933e7b22c913daf51d21e9d93a45",
"versionType": "git"
},
{
"status": "affected",
"version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144",
"lessThan": "cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb",
"versionType": "git"
},
{
"status": "affected",
"version": "af1689a9b7701d9907dfc84d2a4b57c4bc907144",
"lessThan": "566820af017e81497fb5e9d3ad6e7ffe2828bc8b",
"versionType": "git"
},
{
"status": "affected",
"version": "6726429c18c62dbf5e96ebbd522f262e016553fb",
"versionType": "git"
},
{
"status": "affected",
"version": "13fb0fc4917621f3dfa285a27eaf7151d770b5e5",
"versionType": "git"
},
{
"status": "affected",
"version": "890bc4fac3c0973a49cac35f634579bebba7fe48",
"versionType": "git"
},
{
"status": "affected",
"version": "1ae3c59355dc9882e09c020afe8ffbd895ad0f29",
"versionType": "git"
},
{
"status": "affected",
"version": "17a0f64cc02d4972e21c733d9f21d1c512963afa",
"versionType": "git"
},
{
"status": "affected",
"version": "5.4.277",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.10.211",
"lessThan": "5.11",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.150",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.79",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.6.8",
"lessThan": "6.7",
"versionType": "semver"
}
],
"programFiles": [
"fs/smb/client/smb2pdu.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.113",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.9",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/client/smb2pdu.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-10-18T16:16:55.647",
"references": [
{
"url": "https://git.kernel.org/stable/c/566820af017e81497fb5e9d3ad6e7ffe2828bc8b",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/80c67cc71d32ccafc89a29b669243b40d81b930f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/cdb36b09fb1f86d638d0afb44d621ed3f7c1d8eb",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/f09875ff901e933e7b22c913daf51d21e9d93a45",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: close handle after create-context parsing failure\n\nSMB2_open() accounts a successful CREATE response as a remote open before\nparsing its create contexts. If smb2_parse_contexts() rejects malformed\ncontext data, SMB2_open() returns without closing the handle, leaving the\nserver-side handle open and num_remote_opens elevated.\n\nClose the handle after a post-CREATE context parsing failure so the error\npath releases the remote resource and balances the open count."
}
],
"lastModified": "2026-10-19T10:18:54.550",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}