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smb/server: fix session leak in ksmbd_session_register()

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

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
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Publisher date
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