{"id":"CVE-2026-99238","title":"tracing: Hold trace_types_lock when updating modules in persistent instances","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Hold trace_types_lock when updating modules in persistent instances\n\ntrace_module_record() walks ftrace_trace_arrays from the module notifier\nwithout trace_typ…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < 57408eac99b0d8a005796346d317d31f0ca4e07a","Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < dab2bd4d67ad5eaa95019a9511f8d379401b5021","Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < 244c442f54601a24c86ad90572bf36fc3df41c5e","Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < 66877a312ae3c2c3d849e82e882f642ffd4ec3e2","Linux 6.15"],"published":"2026-11-02","updated":"2026-11-03","sourceUpdated":"2026-11-03T19:13:05.949Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99238","references":[{"url":"https://git.kernel.org/stable/c/57408eac99b0d8a005796346d317d31f0ca4e07a"},{"url":"https://git.kernel.org/stable/c/dab2bd4d67ad5eaa95019a9511f8d379401b5021"},{"url":"https://git.kernel.org/stable/c/244c442f54601a24c86ad90572bf36fc3df41c5e"},{"url":"https://git.kernel.org/stable/c/66877a312ae3c2c3d849e82e882f642ffd4ec3e2"}],"tags":["cve.org"],"epss":0.0012,"epssPercentile":0.01846,"ingestedAt":"2026-11-05T20:33:06.390Z","slug":"CVE-2026-99238","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Hold trace_types_lock when updating modules in persistent instances\n\ntrace_module_record() walks ftrace_trace_arrays from the module notifier\nwithout trace_types_lock. A concurrent rmdir of an instance removes it\nfrom the list and frees it under that lock, so a module load or unload\ncan walk into a freed trace_array.\n\n## Affected\n\n- `Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < 57408eac99b0d8a005796346d317d31f0ca4e07a`\n- `Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < dab2bd4d67ad5eaa95019a9511f8d379401b5021`\n- `Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < 244c442f54601a24c86ad90572bf36fc3df41c5e`\n- `Linux >= 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 < 66877a312ae3c2c3d849e82e882f642ffd4ec3e2`\n- `Linux 6.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}