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Back to active CVEs
High · CVSS 7.8CVE-2026-99238

tracing: Hold trace_types_lock when updating modules in persistent instancesCVE-2026-99238

Answer in brief

CVE-2026-99238 records a High severity (CVSS 7.8) vulnerability in tracing: Hold trace_types_lock when updating modules in persistent instances. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 2, 2026Updated Nov 2, 2026Source checked Nov 2, 2026First seen by HOL Nov 2, 2026Material review Nov 2, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 <57408eac99b0d8a005796346d317d31f0ca4e07a || >=5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 <dab2bd4d67ad5eaa95019a9511f8d379401b5021 || >=5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43 <244c442f54601a24c86ad90572bf36fc3df41c5e57408eac99b0d8a005796346d317d31f0ca4e07a, dab2bd4d67ad5eaa95019a9511f8d379401b5021, 244c442f54601a24c86ad90572bf36fc3df41c5e
Linux/Linuxgeneric6.15Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 57408eac99b0d8a005796346d317d31f0ca4e07a if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 2, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: tracing: Hold trace_types_lock when updating modules in persistent instances trace_module_record() walks ftrace_trace_arrays from the module notifier without trace_types_lock. A concurrent rmdir of an instance removes it from the list and frees it under that lock, so a module load or unload can walk into a freed trace_array.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 2, 2026
References
3 linked sources
Open source record