{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89749", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.762Z", "datePublished": "2026-09-11T19:46:53.822Z", "dateUpdated": "2026-09-11T19:46:53.822Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:46:53.822Z"}, "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()\")."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_events.c"], "versions": [{"version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19", "lessThan": "12a499f741fc5be3731c8b0a0d909406575cc2eb", "status": "affected", "versionType": "git"}, {"version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19", "lessThan": "adadf4192f700bca82abfda9fa6d58c0bf37cc04", "status": "affected", "versionType": "git"}, {"version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19", "lessThan": "c40e0b4fa365969e67011529eabdfb66d1022256", "status": "affected", "versionType": "git"}, {"version": "e6187007d6c365b551c69ea3df46f06fd1c8bd19", "lessThan": "649bc7df3e5d7be6f7996a95084037dbf3cad1e5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace_events.c"], "versions": [{"version": "2.6.31", "status": "affected"}, {"version": "0", "lessThan": "2.6.31", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "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": "2.6.31", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.31", "versionEndExcluding": "7.3-rc1"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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()\")."}], "id": "CVE-2026-89749", "lastModified": "2026-09-11T20:20:05.757", "metrics": {}, "published": "2026-09-11T20:20:05.757", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: Tracing subsystem vulnerability can lead to system crash.", "id": "2532518", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532518"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["A flaw was found in the Linux kernel. Specifically, within the tracing subsystem, the `event_test_stuff()` function can pass an invalid error pointer to `kthread_stop()` if `kthread_run()` fails to create a kernel thread. This improper handling of error pointers, particularly under memory pressure, leads to `kthread_stop()` attempting to dereference an invalid memory address. The consequence of this vulnerability is a kernel crash, resulting in a denial of service for the affected system."], "name": "CVE-2026-89749", "public_date": "2026-09-11T19:46:53Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89749\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89749\nhttps://git.kernel.org/stable/c/12a499f741fc5be3731c8b0a0d909406575cc2eb\nhttps://git.kernel.org/stable/c/649bc7df3e5d7be6f7996a95084037dbf3cad1e5\nhttps://git.kernel.org/stable/c/adadf4192f700bca82abfda9fa6d58c0bf37cc04\nhttps://git.kernel.org/stable/c/c40e0b4fa365969e67011529eabdfb66d1022256"], "threat_severity": "Moderate"}

{"created": "2026-09-12T09:30:13.015436+00:00", "updated": "2026-09-12T09:30:13.015450+00:00", "vendors": [], "weaknesses": ["CWE-476", "CWE-690"]}