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CVE-2026-23271

perf: Fix __perf_event_overflow() vs perf_remove_from_context() race PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 592903cdcbf606a838056bae6d03fc557806c914 before 4df1a45819e50993cb351682a6ae8e7ed2d233a0; affected 592903cdcbf606a838056bae6d03fc557806c914 before 4f8d5812337871227bb2c98669a87c306a2f86ef; affected 592903cdcbf606a838056bae6d03fc557806c914 before 5c48fdc4b4623533d86e279f51531a7ba212eb87; affected 592903cdcbf606a838056bae6d03fc557806c914 before 3f89b61dd504c5b6711de9759e053b082f9abf12; affected 592903cdcbf606a838056bae6d03fc557806c914 before bb190628fe5f2a73ba762a9972ba16c5e895f73e; affected 592903cdcbf606a838056bae6d03fc557806c914 before c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae
Linux / Linuxaffected 2.6.31; unaffected 0 before 2.6.31; unaffected 6.1.167 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.77 through 6.12.*; unaffected 6.18.17 through 6.18.*; unaffected 6.19.7 through 6.19.*; unaffected 7.0 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

siemens-SADP

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.