CVE-2026-99238

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    CVE-2026-99238

    Published: 2 Nov 2026Last Modified: 5 Nov 2026

    Summary: tracing: Hold trace_types_lock when updating modules in persistent instances

    Details: 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.

    References: https://git.kernel.org/stable/c/244c442f54601a24c86ad90572bf36fc3df41c5e, https://git.kernel.org/stable/c/57408eac99b0d8a005796346d317d31f0ca4e07a, https://git.kernel.org/stable/c/66877a312ae3c2c3d849e82e882f642ffd4ec3e2, https://git.kernel.org/stable/c/dab2bd4d67ad5eaa95019a9511f8d379401b5021, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/99xxx/CVE-2026-99238.json, https://nvd.nist.gov/vuln/detail/CVE-2026-99238, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 5f3719f697c3fdfae5cd6805f10ac7a04b0f4e43
    Fixed -57408eac99b0d8a005796346d317d31f0ca4e07a

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-99238 | CVE-DB