High severity7.8NVD Advisory· Published Mar 20, 2026· Updated May 22, 2026
CVE-2026-23271
CVE-2026-23271
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.
AI Insight
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Affected products
19- osv-coords16 versionspkg:linux/kernelpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-ec2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/kernel-trace&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kernel-xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4%20LTSS%20EXTREME%20COREpkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_84&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
>= 2.6.31, < 6.1.167+ 15 more
- (no CPE)range: >= 2.6.31, < 6.1.167
- (no CPE)range: < 4.12.14-122.317.1
- (no CPE)range: < 3.0.101-108.210.1
- (no CPE)range: < 4.12.14-122.317.1
- (no CPE)range: < 4.12.14-122.317.1
- (no CPE)range: < 3.0.101-108.210.1
- (no CPE)range: < 3.0.101-108.210.1
- (no CPE)range: < 3.0.101-108.210.1
- (no CPE)range: < 4.12.14-122.317.1
- (no CPE)range: < 4.12.14-122.317.1
- (no CPE)range: < 3.0.101-108.210.1
- (no CPE)range: < 4.12.14-122.317.1
- (no CPE)range: < 4.12.14-122.317.1
- (no CPE)range: < 3.0.101-108.210.1
- (no CPE)range: < 3.0.101-108.210.1
- (no CPE)range: < 1-8.7.1
Patches
Vulnerability mechanics
References
6- git.kernel.org/stable/c/3f89b61dd504c5b6711de9759e053b082f9abf12nvdPatch
- git.kernel.org/stable/c/4df1a45819e50993cb351682a6ae8e7ed2d233a0nvdPatch
- git.kernel.org/stable/c/4f8d5812337871227bb2c98669a87c306a2f86efnvdPatch
- git.kernel.org/stable/c/5c48fdc4b4623533d86e279f51531a7ba212eb87nvdPatch
- git.kernel.org/stable/c/bb190628fe5f2a73ba762a9972ba16c5e895f73envdPatch
- git.kernel.org/stable/c/c9bc1753b3cc41d0e01fbca7f035258b5f4db0aenvdPatch
News mentions
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