CVE-2024-46713
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
Summary
In the Linux kernel, an issue was found in the perf/aux subsystem regarding AUX buffer serialization. The mmap_mutex is insufficient to fully serialize, potentially leading to races and data inconsistencies.
Risk Assessment
The vulnerability could lead to data integrity issues, system crashes, or potentially privilege escalation if an attacker can use perf features.
Recommendation
It is recommended to update the Linux kernel to a version containing the fix that adds a per-RB mutex to fully serialize the AUX buffer.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: perf/aux: Fix AUX buffer serialization Ole reported that event->mmap_mutex is strictly insufficient to serialize the AUX buffer, add a per RB mutex to fully serialize it. Note that in the lock order comment the perf_event::mmap_mutex order was already wrong, that is, it nesting under mmap_lock is not new with this patch.