smb/server: fix session leak in ksmbd_session_register()
In the Linux kernel, the following vulnerability has been resolved: smb/server: fix session leak in ksmbd_session_register() See the procedure below: 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 freed Remove the session from sessions_table and drop its table reference if xa_store() fails.
CVE-2026-90152
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90152
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
"lessThan": "988f99bfddda4e2d1da5f6e98b237dd85e123cee",
"versionType": "git"
},
{
"status": "affected",
"version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
"lessThan": "03a22a003f41b182245e6c71fe565e277cff7094",
"versionType": "git"
},
{
"status": "affected",
"version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
"lessThan": "b967a595fb735d313a8676b2ca6a4cba38506482",
"versionType": "git"
},
{
"status": "affected",
"version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
"lessThan": "55c677619084f9c9fa4146d933cc8ccafc924c87",
"versionType": "git"
},
{
"status": "affected",
"version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
"lessThan": "99b25b046e47e4904373cfeb445c5483f1633d88",
"versionType": "git"
},
{
"status": "affected",
"version": "708c304b583d789957399dd8237f212cf8ad1e4d",
"versionType": "git"
},
{
"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": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"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",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/smb/server/mgmt/user_session.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90152
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48619 · Revision 1
- Added to Heist Feed
- Publisher date