CVE WatchJul 14, 2026

CVE-2026-23271

In the Linux kernel, the following vulnerability has been resolved: perf: Fix __perf_event_overflow() vs perf_remove_from_context() race M

CVSS

7.8

High

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Mar 20, 2026 · Last modified: Jul 14, 2026 · CWE-362

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-08-022026-08-31

Technical description

In the Linux kernel, the following vulnerability has been resolved: perf: Fix __perf_event_overflow() vs perf_remove_from_context() race Make sure that __perf_event_overflow() runs with IRQs disabled for all possible callchains. Specifically the software events can end up running it with only preemption disabled. This opens up a race vs perf_event_exit_event() and friends that will go and free various things the overflow path expects to be present, like the BPF program.

Official references

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