HIGH 7.8 NVD
CVE-2026-99237
In the Linux kernel, the following vulnerability has been resolved: tracing: Hold trace_types_lock when resetting last boot data from readers update_last_data
In the Linux kernel, the following vulnerability has been resolved:
tracing: Hold trace_types_lock when resetting last boot data from readers
update_last_data_if_empty() is called from tracing_open() with O_TRUNC,
tracing_read_pipe() and tracing_buffers_read() without trace_types_lock.
Two readers can both pass the LAST_BOOT test and free module_delta
twice, and a module notifier can update module_delta while it is being
freed.
Take trace_types_lock in those paths and keep the callers that already
hold it on an unlocked variant.
References
- https://git.kernel.org/stable/c/1f06cfe0b60a878619d1d8efe1cd0f515b7dc2aa
- https://git.kernel.org/stable/c/92b69f6db640dadc0851762ee2e12db99f083cad
- https://git.kernel.org/stable/c/d6d991afe775ab7fcf89523a2502b7ca3be56ffd
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-11-02 via NVD.
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