CVE-2026-90152 (GCVE-0-2026-90152)
Vulnerability from cvelistv5
Published
2026-09-17 16:06
Modified
2026-10-30 12:34
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
Impacted products
Vendor Product Version
Linux Linux Version: f623f627ad2b1dc215ab3b0df53fb05cfd3a1c3b
Version: f5c779b7ddbda30866cf2a27c63e34158f858c73
Version: f5c779b7ddbda30866cf2a27c63e34158f858c73
Version: f5c779b7ddbda30866cf2a27c63e34158f858c73
Version: f5c779b7ddbda30866cf2a27c63e34158f858c73
Version: f5c779b7ddbda30866cf2a27c63e34158f858c73
Version: 708c304b583d789957399dd8237f212cf8ad1e4d
Version: d270631c21e68fb8016d6e231d022d7023a2df6f
Version: 02f41d88f15d6b7d523e52cc3f87488f57e9265b
Version: 6.1.29   ≤
Version: 5.15.145   ≤
Version: 6.2.16   ≤
Version: 6.3.2   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": "869807cdd5599c289c21d40f36a504d72a0d23c6",
              "status": "affected",
              "version": "f623f627ad2b1dc215ab3b0df53fb05cfd3a1c3b",
              "versionType": "git"
            },
            {
              "lessThan": "988f99bfddda4e2d1da5f6e98b237dd85e123cee",
              "status": "affected",
              "version": "f5c779b7ddbda30866cf2a27c63e34158f858c73",
              "versionType": "git"
            },
            {
              "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": "d270631c21e68fb8016d6e231d022d7023a2df6f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "02f41d88f15d6b7d523e52cc3f87488f57e9265b",
              "versionType": "git"
            },
            {
              "lessThan": "6.1.191",
              "status": "affected",
              "version": "6.1.29",
              "versionType": "semver"
            },
            {
              "lessThan": "5.16",
              "status": "affected",
              "version": "5.15.145",
              "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": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "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",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.191",
                  "versionStartIncluding": "6.1.29",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.15.145",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.2.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.3.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:34:25.965Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/869807cdd5599c289c21d40f36a504d72a0d23c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/988f99bfddda4e2d1da5f6e98b237dd85e123cee"
        },
        {
          "url": "https://git.kernel.org/stable/c/03a22a003f41b182245e6c71fe565e277cff7094"
        },
        {
          "url": "https://git.kernel.org/stable/c/b967a595fb735d313a8676b2ca6a4cba38506482"
        },
        {
          "url": "https://git.kernel.org/stable/c/55c677619084f9c9fa4146d933cc8ccafc924c87"
        },
        {
          "url": "https://git.kernel.org/stable/c/99b25b046e47e4904373cfeb445c5483f1633d88"
        }
      ],
      "title": "smb/server: fix session leak in ksmbd_session_register()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90152",
    "datePublished": "2026-09-17T16:06:45.641Z",
    "dateReserved": "2026-09-11T19:38:34.789Z",
    "dateUpdated": "2026-10-30T12:34:25.965Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.