{"schema":"threatline.record/2","record":{"id":"CVE-2026-97443","aliases":[],"summary":"perf/ftrace: Fix WARNING in __unregister_ftrace_function","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf/ftrace: Fix WARNING in __unregister_ftrace_function\n\nperf_ftrace_function_unregister() unconditionally calls\nunregister_ftrace_function() without checking whether the ftrace_ops\nwas ever successfully registered. This triggers a WARN_ON in\n__unregister_ftrace_function() when the ops doesn't have\nFTRACE_OPS_FL_ENABLED set.\n\nThis can happen during perf_event_alloc() error cleanup when\nperf_trace_destroy() is called via __free_event() on an event whose\nftrace_ops registration failed or was already torn down by\nperf_try_init_event()'s err_destroy path.\n\nThe call path is:\n  perf_event_alloc() error cleanup\n    -> __free_event()\n      -> event->destroy() [tp_perf_event_destroy]\n        -> perf_trace_destroy()\n          -> perf_trace_event_close()\n            -> TRACE_REG_PERF_CLOSE\n              -> perf_ftrace_function_unregister()\n                -> unregister_ftrace_function()\n                  -> __unregister_ftrace_function()\n                    -> WARN_ON(!(ops->flags & FTRACE_OPS_FL_ENABLED))\n\nFix this by checking FTRACE_OPS_FL_ENABLED before attempting to\nunregister. If the ops is not enabled, just free the filter and\nreturn success.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","source_modified_at":"2026-09-25T12:44:20.881Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"7ef5aa081f989ecfecc1df02068a80aebbd3ec31","lessThan":"df097713b56ffac5eed32a9be2e7d27ac48d9087","status":"affected","versionType":"git"},{"version":"c70ca298036c58a88686ff388d3d367e9d21acf0","lessThan":"7f845820afaad339341c2ae42bc7fdec175df9ea","status":"affected","versionType":"git"},{"version":"c70ca298036c58a88686ff388d3d367e9d21acf0","lessThan":"9581123304b23049437324038698af9fb56ee663","status":"affected","versionType":"git"},{"version":"315a50c6b1c6ce191f19f3372935d8e2ed9b53a6","status":"affected","versionType":"git"},{"version":"1209b0b29fd472e7dbd2b06544b019dd9f9b7e51","status":"affected","versionType":"git"},{"version":"6.12.24","lessThan":"6.12.111","status":"affected","versionType":"semver"},{"version":"6.13.12","lessThan":"6.14","status":"affected","versionType":"semver"},{"version":"6.14.3","lessThan":"6.15","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","source_modified_at":"2026-09-25T12:44:20.881Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","source_modified_at":"2026-09-25T12:44:20.881Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"7f845820afaad339341c2ae42bc7fdec175df9ea","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","source_modified_at":"2026-09-25T12:44:20.881Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"9581123304b23049437324038698af9fb56ee663","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","source_modified_at":"2026-09-25T12:44:20.881Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"6.12.111","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","source_modified_at":"2026-09-25T12:44:20.881Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"6.14","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","source_modified_at":"2026-09-25T12:44:20.881Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"Linux","ecosystem":null},"version":"6.15","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00166,"percentile":0.05544,"score_date":"2026-10-23"},"published_at":"2026-09-24T16:03:57.790Z","modified_at":"2026-09-25T12:44:20.881Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97443","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-25T12:44:20.881Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97443","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/df097713b56ffac5eed32a9be2e7d27ac48d9087"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/7f845820afaad339341c2ae42bc7fdec175df9ea"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9581123304b23049437324038698af9fb56ee663"}],"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":"2026-09-25T12:44:20.881Z","content_hash":"76b6787fdb5828f54b62daaf3e4c01f0ba1c0fef14721f5d9c72a6a11611137d"}}