{"id":"CVE-2026-99276","aliases":[],"cve":{"records":[{"id":"CVE-2026-99276","source":"Linux","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-25T10:25:14.405Z","published":"2026-11-07T14:08:46.432Z","modified":"2026-11-07T14:08:46.432Z"}],"publishers":[{"name":"Linux","role":"CNA","organizationId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","modified":"2026-11-07T14:08:46.432Z"}],"references":[{"url":"https://git.kernel.org/stable/c/4e4e8b38994a0b0fc23f00ca6698b469a41abe70","tags":[],"source":"Linux"},{"url":"https://git.kernel.org/stable/c/b4bae7af1154089be87c7475218264fcbfd16d10","tags":[],"source":"Linux"}],"weaknesses":[],"applicability":[{"source":"Linux","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.3","versionEndExcluding":"7.3.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.3","versionEndExcluding":"7.4-rc1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.2.8"}]}]}]}],"prioritization":[]},"title":"ksmbd: defer connection scavenging while session locks are busy","titleSource":"Linux","descriptionSource":"Linux","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.","score":null,"severity":"unknown","published":"2026-11-07T14:08:46.432Z","modified":"2026-11-07T14:08:46.432Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"d7fd1f98607f2cd358e583f9548bdf0173090a86","status":"affected","lessThan":"4e4e8b38994a0b0fc23f00ca6698b469a41abe70","versionType":"git"},{"version":"d7fd1f98607f2cd358e583f9548bdf0173090a86","status":"affected","lessThan":"b4bae7af1154089be87c7475218264fcbfd16d10","versionType":"git"},{"version":"c99ea7855124ca1428a1e59c2b4590aaef34eacf","status":"affected","versionType":"git"},{"version":"7.2.8","status":"affected","lessThan":"7.3","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99276"},{"vendor":"Linux","name":"Linux","platforms":[],"versions":[{"version":"7.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.3","versionType":"semver"},{"version":"7.3.2","status":"unaffected","lessThanOrEqual":"7.3.*","versionType":"semver"},{"version":"7.4-rc1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"defaultStatus":"affected","cpes":[],"source":"Linux","url":"https://www.cve.org/CVERecord?id=CVE-2026-99276"}],"remediation":[],"references":["https://git.kernel.org/stable/c/4e4e8b38994a0b0fc23f00ca6698b469a41abe70","https://git.kernel.org/stable/c/b4bae7af1154089be87c7475218264fcbfd16d10"],"sources":[{"name":"CVE","id":"CVE-2026-99276","modified":"2026-11-07T14:08:46.432Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-99276"}],"assessments":[],"sourceAffected":[],"observedAt":"2026-11-07T14:15:48.524Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:10:33.488Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-07T14:40:34.870Z","attemptedAt":"2026-11-07T14:40:34.870Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-07T14:40:33.744Z","attemptedAt":"2026-11-07T14:40:33.744Z"},{"source":"EUVD","status":"no-result","checkedAt":"2026-11-07T14:40:33.348Z","attemptedAt":"2026-11-07T14:40:33.348Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-07T14:40:34.637Z","attemptedAt":"2026-11-07T14:40:34.637Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-99276","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-99276","modified":"2026-11-07T14:17:02.967","checkedAt":"2026-11-07T14:40:34.870Z"}],"aiSummary":null}