GHSA-C2GF-579M-PQR2
Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31In 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.
{
"affected": [],
"aliases": [
"CVE-2026-90152"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-17T17:17:08Z",
"severity": null
},
"details": "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": "GHSA-c2gf-579m-pqr2",
"modified": "2026-09-17T18:31:53Z",
"published": "2026-09-17T18:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90152"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/03a22a003f41b182245e6c71fe565e277cff7094"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/55c677619084f9c9fa4146d933cc8ccafc924c87"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/99b25b046e47e4904373cfeb445c5483f1633d88"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b967a595fb735d313a8676b2ca6a4cba38506482"
}
],
"schema_version": "1.4.0",
"severity": []
}
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