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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 freed

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

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.

Linux — Linux KernelAI

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",
              "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": "6.12.110",
              "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"
}