CVE-2026-23271
perf: Fix __perf_event_overflow() vs perf_remove_from_context() race
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 20, 2026 |
| Last Updated | Apr 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
592903cdcbf606a838056bae6d03fc557806c914 < 4df1a45819e50993cb351682a6ae8e7ed2d233a0 592903cdcbf606a838056bae6d03fc557806c914 < 4f8d5812337871227bb2c98669a87c306a2f86ef 592903cdcbf606a838056bae6d03fc557806c914 < 5c48fdc4b4623533d86e279f51531a7ba212eb87 592903cdcbf606a838056bae6d03fc557806c914 < 3f89b61dd504c5b6711de9759e053b082f9abf12 592903cdcbf606a838056bae6d03fc557806c914 < bb190628fe5f2a73ba762a9972ba16c5e895f73e 592903cdcbf606a838056bae6d03fc557806c914 < c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae
Linux / Linux
2.6.31
References
git.kernel.org: https://git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0 git.kernel.org: https://git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86ef git.kernel.org: https://git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87 git.kernel.org: https://git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12 git.kernel.org: https://git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73e git.kernel.org: https://git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae