{"api_version":"1","generated_at":"2026-09-12T13:54:30+00:00","cve":"CVE-2026-89749","urls":{"html":"https://cve.report/CVE-2026-89749","api":"https://cve.report/api/cve/CVE-2026-89749.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89749","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89749"},"summary":{"title":"tracing: Fix crash passing ERR_PTR to kthread_stop()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix crash passing ERR_PTR to kthread_stop()\n\nevent_test_stuff() calls kthread_run() and unconditionally passes the\nreturned task_struct pointer to kthread_stop(). kthread_run() returns an\nerror pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for\nexample under memory pressure during the boot-time event self-test.\nkthread_stop() then dereferences the invalid pointer, crashing the kernel.\n\nCheck the result of kthread_run() before passing it to kthread_stop(). Use\nWARN_ON() so that a failure to create the self-test thread does not go\nunnoticed, matching the ring-buffer self-test fix in commit\n91542863abad (\"ring-buffer: Fix crash passing ERR_PTR to kthread_stop()\").","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:20:05","updated_at":"2026-09-11 20:20:05"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256","name":"https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb","name":"https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04","name":"https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5","name":"https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89749","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89749","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 12a499f741fc5be3731c8b0a0d909406575cc2eb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 adadf4192f700bca82abfda9fa6d58c0bf37cc04 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 c40e0b4fa365969e67011529eabdfb66d1022256 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected e6187007d6c365b551c69ea3df46f06fd1c8bd19 649bc7df3e5d7be6f7996a95084037dbf3cad1e5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.31","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.31 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/trace/trace_events.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"12a499f741fc5be3731c8b0a0d909406575cc2eb","status":"affected","version":"e6187007d6c365b551c69ea3df46f06fd1c8bd19","versionType":"git"},{"lessThan":"adadf4192f700bca82abfda9fa6d58c0bf37cc04","status":"affected","version":"e6187007d6c365b551c69ea3df46f06fd1c8bd19","versionType":"git"},{"lessThan":"c40e0b4fa365969e67011529eabdfb66d1022256","status":"affected","version":"e6187007d6c365b551c69ea3df46f06fd1c8bd19","versionType":"git"},{"lessThan":"649bc7df3e5d7be6f7996a95084037dbf3cad1e5","status":"affected","version":"e6187007d6c365b551c69ea3df46f06fd1c8bd19","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/trace/trace_events.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.31"},{"lessThan":"2.6.31","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"2.6.31","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"2.6.31","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix crash passing ERR_PTR to kthread_stop()\n\nevent_test_stuff() calls kthread_run() and unconditionally passes the\nreturned task_struct pointer to kthread_stop(). kthread_run() returns an\nerror pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for\nexample under memory pressure during the boot-time event self-test.\nkthread_stop() then dereferences the invalid pointer, crashing the kernel.\n\nCheck the result of kthread_run() before passing it to kthread_stop(). Use\nWARN_ON() so that a failure to create the self-test thread does not go\nunnoticed, matching the ring-buffer self-test fix in commit\n91542863abad (\"ring-buffer: Fix crash passing ERR_PTR to kthread_stop()\")."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:53.822Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb"},{"url":"https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04"},{"url":"https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256"},{"url":"https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5"}],"title":"tracing: Fix crash passing ERR_PTR to kthread_stop()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89749","datePublished":"2026-09-11T19:46:53.822Z","dateReserved":"2026-09-11T19:38:34.762Z","dateUpdated":"2026-09-11T19:46:53.822Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:20:05","lastModifiedDate":"2026-09-11 20:20:05","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89749","Ordinal":"1","Title":"tracing: Fix crash passing ERR_PTR to kthread_stop()","CVE":"CVE-2026-89749","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89749","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix crash passing ERR_PTR to kthread_stop()\n\nevent_test_stuff() calls kthread_run() and unconditionally passes the\nreturned task_struct pointer to kthread_stop(). kthread_run() returns an\nerror pointer such as ERR_PTR(-ENOMEM) when kthread creation fails, for\nexample under memory pressure during the boot-time event self-test.\nkthread_stop() then dereferences the invalid pointer, crashing the kernel.\n\nCheck the result of kthread_run() before passing it to kthread_stop(). Use\nWARN_ON() so that a failure to create the self-test thread does not go\nunnoticed, matching the ring-buffer self-test fix in commit\n91542863abad (\"ring-buffer: Fix crash passing ERR_PTR to kthread_stop()\").","Type":"Description","Title":"tracing: Fix crash passing ERR_PTR to kthread_stop()"}]}}}