FKIE_CVE-2026-90152

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-17 17:17
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/03a22a003f41b182245e6c71fe565e277cff7094
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55c677619084f9c9fa4146d933cc8ccafc924c87
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/99b25b046e47e4904373cfeb445c5483f1633d88
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b967a595fb735d313a8676b2ca6a4cba38506482
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/mgmt/user_session.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "03a22a003f41b182245e6c71fe565e277cff7094",
              "status": "affected",
              "version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
              "versionType": "git"
            },
            {
              "lessThan": "b967a595fb735d313a8676b2ca6a4cba38506482",
              "status": "affected",
              "version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
              "versionType": "git"
            },
            {
              "lessThan": "55c677619084f9c9fa4146d933cc8ccafc924c87",
              "status": "affected",
              "version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
              "versionType": "git"
            },
            {
              "lessThan": "99b25b046e47e4904373cfeb445c5483f1633d88",
              "status": "affected",
              "version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
              "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"
            },
            {
              "lessThan": "5.16",
              "status": "affected",
              "version": "5.15.145",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2",
              "status": "affected",
              "version": "6.1.29",
              "versionType": "semver"
            },
            {
              "lessThan": "6.3",
              "status": "affected",
              "version": "6.2.16",
              "versionType": "semver"
            },
            {
              "lessThan": "6.4",
              "status": "affected",
              "version": "6.3.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/smb/server/mgmt/user_session.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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(\u0026sess-\u003erefcnt, 2)\n        hash_add(sessions_table, \u0026sess-\u003ehlist, sess-\u003eid)\n    ksmbd_session_register\n      xa_store(\u0026conn-\u003esessions, sess-\u003eid, sess) // fail\n    ksmbd_user_session_put\n      atomic_dec(\u0026sess-\u003erefcnt) // refcnt is 1, session is not freed\n\nRemove the session from sessions_table and drop its table reference if\nxa_store() fails."
    }
  ],
  "id": "CVE-2026-90152",
  "lastModified": "2026-09-17T17:17:08.207",
  "metrics": {},
  "published": "2026-09-17T17:17:08.207",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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