{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97443","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-24T14:53:16.870Z","datePublished":"2026-09-24T16:03:57.790Z","dateUpdated":"2026-09-25T12:44:20.881Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-25T12:44:20.881Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_event_perf.c"],"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"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/trace/trace_event_perf.c"],"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"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.24","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/df097713b56ffac5eed32a9be2e7d27ac48d9087"},{"url":"https://git.kernel.org/stable/c/7f845820afaad339341c2ae42bc7fdec175df9ea"},{"url":"https://git.kernel.org/stable/c/9581123304b23049437324038698af9fb56ee663"}],"title":"perf/ftrace: Fix WARNING in __unregister_ftrace_function","x_generator":{"engine":"bippy-1.2.0"}}}}