Race Condition in Linux Kernel Affecting Performance Events
CVE-2026-23271
What is CVE-2026-23271?
A race condition in the Linux Kernel's performance event handling can potentially lead to inconsistencies in the execution path of performance monitoring tools. Specifically, when the __perf_event_overflow() function is called, it may execute with preemption disabled, risking interference from concurrent processes that could release resources expected to be present by this function. This issue may affect software events and their proper handling, particularly disturbing the functionality tied to the BPF program and performance monitoring. It's crucial for users of the Linux Kernel to assess their versions and apply the necessary patches to mitigate any risks associated with this vulnerability.
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Affected Version(s)
Linux 592903cdcbf606a838056bae6d03fc557806c914 < 5c48fdc4b4623533d86e279f51531a7ba212eb87
Linux 592903cdcbf606a838056bae6d03fc557806c914 < 3f89b61dd504c5b6711de9759e053b082f9abf12
Linux 592903cdcbf606a838056bae6d03fc557806c914