CVE-2026-99247

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-99247", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.403Z", "datePublished": "2026-11-03T11:18:26.163Z", "dateUpdated": "2026-11-03T11:18:26.163Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-11-03T11:18:26.163Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Do not initialize tracefs work if tracing is disabled\n\nIf trace buffer allocation fails during early boot (e.g. in\nearly_trace_init() -> allocate_trace_buffers()), tracing_disabled is\nleft set to 1 and the global trace array events list remains\nuninitialized.\n\nLater during boot, tracer_init_tracefs() (invoked via fs_initcall)\nqueues tracerfs_init_work asynchronously without checking if tracing was\ndisabled. When tracer_init_tracefs_work_func() runs, it calls\nevent_trace_init() and init_tracer_tracefs(&global_trace, NULL)\nunconditionally. This leads to __find_event_file() dereferencing an\nuninitialized tr->events list, causing an early boot NULL pointer\ndereference Oops:\n\n BUG: Kernel NULL pointer dereference on read at 0x00000010\n Faulting instruction address: 0xc000000000485be0\n Oops: Kernel access of bad area, sig: 7 [#1]\n ...\n NIP [c000000000485be0] __find_event_file+0x70/0x3c0\n LR [c000000000448874] init_tracer_tracefs+0x274/0xc80\n Call Trace:\n init_tracer_tracefs+0x274/0xc80\n tracer_init_tracefs_work_func+0x50/0x320\n process_one_work+0x1e8/0x5c0\n worker_thread+0x1dc/0x3d0\n kthread+0x194/0x1b0\n start_kernel_thread+0x14/0x18\n\nCheck tracing_disabled at the beginning of tracer_init_tracefs_work_func()\nand return immediately if tracing is disabled or failed to initialize,\npreventing the crash."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/trace/trace.c"], "versions": [{"version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "lessThan": "e8665e884e076d894f3eed8b9ea28e37a6448604", "status": "affected", "versionType": "git"}, {"version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "lessThan": "e8cfcd7e60eaa3b0dea4d71c64499604e7081736", "status": "affected", "versionType": "git"}, {"version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "lessThan": "afd38b10b1c6a5c5d6952b15b990596dab9684e6", "status": "affected", "versionType": "git"}, {"version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "lessThan": "813e18881c6472eb229a63180ff42c808e3e949b", "status": "affected", "versionType": "git"}, {"version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "lessThan": "7539c61f522ff693d9565a0411386c2236e776cd", "status": "affected", "versionType": "git"}, {"version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "lessThan": "b3b974008388ab59e44d764ba7a63c988fec2524", "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.c"], "versions": [{"version": "5.19", "status": "affected"}, {"version": "0", "lessThan": "5.19", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.161", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.115", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.59", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.13", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "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": "5.19", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.6.161"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.12.115"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "6.18.59"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.2.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.19", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/e8665e884e076d894f3eed8b9ea28e37a6448604"}, {"url": "https://git.kernel.org/stable/c/e8cfcd7e60eaa3b0dea4d71c64499604e7081736"}, {"url": "https://git.kernel.org/stable/c/afd38b10b1c6a5c5d6952b15b990596dab9684e6"}, {"url": "https://git.kernel.org/stable/c/813e18881c6472eb229a63180ff42c808e3e949b"}, {"url": "https://git.kernel.org/stable/c/7539c61f522ff693d9565a0411386c2236e776cd"}, {"url": "https://git.kernel.org/stable/c/b3b974008388ab59e44d764ba7a63c988fec2524"}], "title": "tracing: Do not initialize tracefs work if tracing is disabled", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/trace/trace.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "e8665e884e076d894f3eed8b9ea28e37a6448604", "status": "affected", "version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "versionType": "git"}, {"lessThan": "e8cfcd7e60eaa3b0dea4d71c64499604e7081736", "status": "affected", "version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "versionType": "git"}, {"lessThan": "afd38b10b1c6a5c5d6952b15b990596dab9684e6", "status": "affected", "version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "versionType": "git"}, {"lessThan": "813e18881c6472eb229a63180ff42c808e3e949b", "status": "affected", "version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "versionType": "git"}, {"lessThan": "7539c61f522ff693d9565a0411386c2236e776cd", "status": "affected", "version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "versionType": "git"}, {"lessThan": "b3b974008388ab59e44d764ba7a63c988fec2524", "status": "affected", "version": "6621a7004684bfcff5af4c8e4d37989941f42a6b", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/trace/trace.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.19"}, {"lessThan": "5.19", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.161", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.115", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.59", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "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: Do not initialize tracefs work if tracing is disabled\n\nIf trace buffer allocation fails during early boot (e.g. in\nearly_trace_init() -> allocate_trace_buffers()), tracing_disabled is\nleft set to 1 and the global trace array events list remains\nuninitialized.\n\nLater during boot, tracer_init_tracefs() (invoked via fs_initcall)\nqueues tracerfs_init_work asynchronously without checking if tracing was\ndisabled. When tracer_init_tracefs_work_func() runs, it calls\nevent_trace_init() and init_tracer_tracefs(&global_trace, NULL)\nunconditionally. This leads to __find_event_file() dereferencing an\nuninitialized tr->events list, causing an early boot NULL pointer\ndereference Oops:\n\n BUG: Kernel NULL pointer dereference on read at 0x00000010\n Faulting instruction address: 0xc000000000485be0\n Oops: Kernel access of bad area, sig: 7 [#1]\n ...\n NIP [c000000000485be0] __find_event_file+0x70/0x3c0\n LR [c000000000448874] init_tracer_tracefs+0x274/0xc80\n Call Trace:\n init_tracer_tracefs+0x274/0xc80\n tracer_init_tracefs_work_func+0x50/0x320\n process_one_work+0x1e8/0x5c0\n worker_thread+0x1dc/0x3d0\n kthread+0x194/0x1b0\n start_kernel_thread+0x14/0x18\n\nCheck tracing_disabled at the beginning of tracer_init_tracefs_work_func()\nand return immediately if tracing is disabled or failed to initialize,\npreventing the crash."}], "id": "CVE-2026-99247", "lastModified": "2026-11-03T12:17:31.190", "metrics": {}, "published": "2026-11-03T12:17:31.190", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7539c61f522ff693d9565a0411386c2236e776cd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/813e18881c6472eb229a63180ff42c808e3e949b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/afd38b10b1c6a5c5d6952b15b990596dab9684e6"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b3b974008388ab59e44d764ba7a63c988fec2524"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8665e884e076d894f3eed8b9ea28e37a6448604"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e8cfcd7e60eaa3b0dea4d71c64499604e7081736"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,e8665e884e076d894f3eed8b9ea28e37a6448604)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,e8cfcd7e60eaa3b0dea4d71c64499604e7081736)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,afd38b10b1c6a5c5d6952b15b990596dab9684e6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,813e18881c6472eb229a63180ff42c808e3e949b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,7539c61f522ff693d9565a0411386c2236e776cd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,b3b974008388ab59e44d764ba7a63c988fec2524)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.191,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.161,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.115,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.59,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.13,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,e8665e884e076d894f3eed8b9ea28e37a6448604)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,e8cfcd7e60eaa3b0dea4d71c64499604e7081736)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,afd38b10b1c6a5c5d6952b15b990596dab9684e6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,813e18881c6472eb229a63180ff42c808e3e949b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,7539c61f522ff693d9565a0411386c2236e776cd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[6621a7004684bfcff5af4c8e4d37989941f42a6b,b3b974008388ab59e44d764ba7a63c988fec2524)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "5.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,5.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.191,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.161,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.115,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.59,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.13,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-11-03T12:30:14.941559+00:00", "updated": "2026-11-03T14:00:18.790737+00:00", "vendors": ["linux", "linux$PRODUCT$linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-476", "CWE-665"]}