{"affected":[{"defaultStatus":"unaffected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"lessThan":"4e4e8b38994a0b0fc23f00ca6698b469a41abe70","status":"affected","version":"d7fd1f98607f2cd358e583f9548bdf0173090a86","versionType":"git"},{"lessThan":"b4bae7af1154089be87c7475218264fcbfd16d10","status":"affected","version":"d7fd1f98607f2cd358e583f9548bdf0173090a86","versionType":"git"},{"status":"affected","version":"c99ea7855124ca1428a1e59c2b4590aaef34eacf","versionType":"git"},{"lessThan":"7.3","status":"affected","version":"7.2.8","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","source":"CNA: Linux","vendor":"Linux","versions":[{"status":"affected","version":"7.3"},{"lessThan":"7.3","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"7.3.*","status":"unaffected","version":"7.3.2","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.4-rc1","versionType":"original_commit_for_fix"}]}],"cveId":"CVE-2026-99276","cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: defer connection scavenging while session locks are busy\n\nThe expiration worker holds conn_list_lock for reading while checking\nfor authenticated sessions. Without this change, the check can wait for\nconn->session_lock or sessions_table_lock.\n\nIn destroy_previous_session(), the status updates after\nksmbd_conn_wait_idle_sess() run with both session locks held for\nwriting. Both the KSMBD_SESS_GOOD error path and the\nKSMBD_SESS_NEED_SETUP success path call ksmbd_all_conn_set_status(),\nwhich takes conn_list_lock for reading.\n\nA writer queued on conn_list_lock can block these new read acquisitions.\nThe worker then waits for a session lock held by\ndestroy_previous_session(), which waits behind the writer. The writer\ncannot proceed until the worker releases conn_list_lock.\n\nTry both session locks instead of waiting in the scavenging check. Keep\nthe connection when either lock is busy and let the periodic worker\nretry later.","epss":null,"exploits":[],"kev":null,"metrics":[],"modifiedAt":1794060526432,"publishedAt":1794060526432,"references":[{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/4e4e8b38994a0b0fc23f00ca6698b469a41abe70"},{"source":"CNA: Linux","tags":[],"url":"https://git.kernel.org/stable/c/b4bae7af1154089be87c7475218264fcbfd16d10"}],"remediation":[],"revision":"337f1bcff9245280d558110335b6d5d86f3338fbde2952240687ab0409ebd1b7","sources":[{"modifiedAt":1794060526432,"name":"CNA: Linux","retrievedAt":1794064155347,"url":"https://www.cve.org/CVERecord?id=CVE-2026-99276"}],"ssvc":null,"status":"published","title":"ksmbd: defer connection scavenging while session locks are busy","updatedAt":1794064155347}