{"schema":"threatline.record/2","record":{"id":"CVE-2026-99058","aliases":[],"summary":"workqueue: Fix NULL current_pwq deref in chained work check","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nworkqueue: Fix NULL current_pwq deref in chained work check\n\ncurrent_wq_worker() only tells us that %current is a kworker. It does\nnot guarantee that the worker is currently executing a work item, as\nworker->current_pwq is populated only while process_one_work() is running\nthe work function.\n\nis_chained_work() can be reached while queueing on a draining or\ndestroying workqueue. If a kworker outside work-item execution reaches\nthat path, current_wq_worker() returns a worker but worker->current_pwq is\nNULL, and the chained-work test can fault before it emits the intended\nwarning.\n\nGuard the chained-work test with worker->current_pwq. A kworker without\ncurrent_pwq is not executing work on the target workqueue, so the helper\nshould return false and let the draining/destroying warning fire.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99058","source_modified_at":"2026-10-23T12:22:45.920Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"8d03ecfe471802d6afe97da97722b6924533aa82","lessThan":"3dc61af2998cfc7312d6e59bbdcd5eed074483f2","status":"affected","versionType":"git"},{"version":"8d03ecfe471802d6afe97da97722b6924533aa82","lessThan":"729d576df89c7e4341e58c452f8890620a610ac2","status":"affected","versionType":"git"},{"version":"8d03ecfe471802d6afe97da97722b6924533aa82","lessThan":"b12a25fb2b9d5dac80e419d695450cc17a51fdfd","status":"affected","versionType":"git"},{"version":"8d03ecfe471802d6afe97da97722b6924533aa82","lessThan":"1a2668682e998039a027796b236319b380078a6a","status":"affected","versionType":"git"},{"version":"8d03ecfe471802d6afe97da97722b6924533aa82","lessThan":"980db94e3eeefdd8a1c46f86412c33a7f7806f51","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99058","source_modified_at":"2026-10-23T12:22:45.920Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Linux","vendor":"Linux","versions":[{"version":"3.9","status":"affected"},{"version":"0","lessThan":"3.9","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.11","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99058","source_modified_at":"2026-10-23T12:22:45.920Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"3dc61af2998cfc7312d6e59bbdcd5eed074483f2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99058","source_modified_at":"2026-10-23T12:22:45.920Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"729d576df89c7e4341e58c452f8890620a610ac2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99058","source_modified_at":"2026-10-23T12:22:45.920Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"1a2668682e998039a027796b236319b380078a6a","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-99058","source_modified_at":"2026-10-23T12:22:45.920Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Linux","ecosystem":null},"version":"980db94e3eeefdd8a1c46f86412c33a7f7806f51","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-23T12:22:45.920Z","modified_at":"2026-10-23T12:22:45.920Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-99058","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T12:22:45.920Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/3dc61af2998cfc7312d6e59bbdcd5eed074483f2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/729d576df89c7e4341e58c452f8890620a610ac2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/b12a25fb2b9d5dac80e419d695450cc17a51fdfd"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/1a2668682e998039a027796b236319b380078a6a"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/980db94e3eeefdd8a1c46f86412c33a7f7806f51"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T12:22:45.920Z","content_hash":"59dfe79d0cc2642e40cf6943fa5062eb6a506587e830f00f9ca74b721c53c92e"}}