{"id":"CVE-2026-89749","revision":"62f4191802934ca9bcefeebe71cfb8af","records":[{"revision":"62f4191802934ca9bcefeebe71cfb8af","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89749","aliases":[],"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":0,"publishedAt":"2026-09-11T19:46:53.822+00:00","modifiedAt":"2026-10-19T08:52:03.128+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/trace/trace_events.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"c1a4fb7aa290f158d50654d640292e49d9055fd1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"42ccb215ef0a552acbbd32f81009bfe4b278ba77\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"98d06fb9865a490e12ebe32d65b9ffac6108614d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"ceb1707aef5824cf024eb82d10787b7621e2ff35\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"12a499f741fc5be3731c8b0a0d909406575cc2eb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"adadf4192f700bca82abfda9fa6d58c0bf37cc04\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"c40e0b4fa365969e67011529eabdfb66d1022256\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e6187007d6c365b551c69ea3df46f06fd1c8bd19\",\n                            \"lessThan\": \"649bc7df3e5d7be6f7996a95084037dbf3cad1e5\",\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/trace/trace_events.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.31\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.31\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.109\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\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/c1a4fb7aa290f158d50654d640292e49d9055fd1","https://git.kernel.org/stable/c/42ccb215ef0a552acbbd32f81009bfe4b278ba77","https://git.kernel.org/stable/c/98d06fb9865a490e12ebe32d65b9ffac6108614d","https://git.kernel.org/stable/c/ceb1707aef5824cf024eb82d10787b7621e2ff35","https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb","https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04","https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256","https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89749","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89749","identifiers":["CVE-2026-89749"]},"retained":false,"historicalAffected":[]}],"coverage":[]}