{"id":"CVE-2026-99058","revision":"dd35e18df9f14afebd20bb937823fc10","records":[{"revision":"dd35e18df9f14afebd20bb937823fc10","observedAt":"2026-10-23T16:01:20.601+00:00","statement":{"source":"cve-program","id":"CVE-2026-99058","aliases":[],"title":"workqueue: Fix NULL current_pwq deref in chained work check","description":"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.","state":0,"publishedAt":"2026-10-23T12:22:45.92+00:00","modifiedAt":"2026-10-23T12:22:45.92+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/workqueue.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"8d03ecfe471802d6afe97da97722b6924533aa82\",\n                            \"lessThan\": \"3dc61af2998cfc7312d6e59bbdcd5eed074483f2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8d03ecfe471802d6afe97da97722b6924533aa82\",\n                            \"lessThan\": \"729d576df89c7e4341e58c452f8890620a610ac2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8d03ecfe471802d6afe97da97722b6924533aa82\",\n                            \"lessThan\": \"b12a25fb2b9d5dac80e419d695450cc17a51fdfd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8d03ecfe471802d6afe97da97722b6924533aa82\",\n                            \"lessThan\": \"1a2668682e998039a027796b236319b380078a6a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"8d03ecfe471802d6afe97da97722b6924533aa82\",\n                            \"lessThan\": \"980db94e3eeefdd8a1c46f86412c33a7f7806f51\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/workqueue.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.113\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.57\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.11\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/3dc61af2998cfc7312d6e59bbdcd5eed074483f2","https://git.kernel.org/stable/c/729d576df89c7e4341e58c452f8890620a610ac2","https://git.kernel.org/stable/c/b12a25fb2b9d5dac80e419d695450cc17a51fdfd","https://git.kernel.org/stable/c/1a2668682e998039a027796b236319b380078a6a","https://git.kernel.org/stable/c/980db94e3eeefdd8a1c46f86412c33a7f7806f51"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99058","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-99058","identifiers":["CVE-2026-99058"]},"retained":false,"historicalAffected":[]}],"coverage":[]}