CVE-2026-90152
Estado: RecibidaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
smb/server: fix session leak in ksmbd_session_register()
See the procedure below:
Remove the session from sessions_table and drop its table reference if xa_store() fails.
Detalles técnicos trazas, registros y código del informe original
smb2_sess_setup
ksmbd_smb2_session_create
__session_create
atomic_set(&sess->refcnt, 2)
hash_add(sessions_table, &sess->hlist, sess->id)
ksmbd_session_register
xa_store(&conn->sessions, sess->id, sess) // fail
ksmbd_user_session_put
atomic_dec(&sess->refcnt) // refcnt is 1, session is not freedCVSS
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: 0.21%
- Percentil entre todas las CVEs puntuadas: 10
- Fecha de la puntuación: 6/10/2026
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
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-90152",
"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": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
"lessThan": "03a22a003f41b182245e6c71fe565e277cff7094",
"versionType": "git"
},
{
"status": "affected",
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"lessThan": "b967a595fb735d313a8676b2ca6a4cba38506482",
"versionType": "git"
},
{
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"versionType": "git"
},
{
"status": "affected",
"version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
"lessThan": "99b25b046e47e4904373cfeb445c5483f1633d88",
"versionType": "git"
},
{
"status": "affected",
"version": "708c304b583d789957399dd8237f212cf8ad1e4d",
"versionType": "git"
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{
"status": "affected",
"version": "f623f627ad2b1dc215ab3b0df53fb05cfd3a1c3b",
"versionType": "git"
},
{
"status": "affected",
"version": "d270631c21e68fb8016d6e231d022d7023a2df6f",
"versionType": "git"
},
{
"status": "affected",
"version": "02f41d88f15d6b7d523e52cc3f87488f57e9265b",
"versionType": "git"
},
{
"status": "affected",
"version": "5.15.145",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.29",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.2.16",
"lessThan": "6.3",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.3.2",
"lessThan": "6.4",
"versionType": "semver"
}
],
"programFiles": [
"fs/smb/server/mgmt/user_session.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.4"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.4",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3-rc1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/mgmt/user_session.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2026-09-17T17:17:08.207",
"references": [
{
"url": "https://git.kernel.org/stable/c/03a22a003f41b182245e6c71fe565e277cff7094",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/55c677619084f9c9fa4146d933cc8ccafc924c87",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/99b25b046e47e4904373cfeb445c5483f1633d88",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/b967a595fb735d313a8676b2ca6a4cba38506482",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix session leak in ksmbd_session_register()\n\nSee the procedure below:\n\n smb2_sess_setup\n ksmbd_smb2_session_create\n __session_create\n atomic_set(&sess->refcnt, 2)\n hash_add(sessions_table, &sess->hlist, sess->id)\n ksmbd_session_register\n xa_store(&conn->sessions, sess->id, sess) // fail\n ksmbd_user_session_put\n atomic_dec(&sess->refcnt) // refcnt is 1, session is not freed\n\nRemove the session from sessions_table and drop its table reference if\nxa_store() fails."
}
],
"lastModified": "2026-09-17T17:17:08.207",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}