CVE-2026-23271

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Source
https://cve.org/CVERecord?id=CVE-2026-23271
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23271.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-23271
Downstream
Published
2026-03-20T08:08:46.711Z
Modified
2026-04-02T13:12:19.377376Z
Summary
perf: Fix __perf_event_overflow() vs perf_remove_from_context() race
Details

In the Linux kernel, the following vulnerability has been resolved:

perf: Fix _perfeventoverflow() vs perfremovefromcontext() race

Make sure that __perfeventoverflow() 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 perfeventexit_event() and friends that will go and free various things the overflow path expects to be present, like the BPF program.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23271.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
592903cdcbf606a838056bae6d03fc557806c914
Fixed
4df1a45819e50993cb351682a6ae8e7ed2d233a0
Fixed
4f8d5812337871227bb2c98669a87c306a2f86ef
Fixed
5c48fdc4b4623533d86e279f51531a7ba212eb87
Fixed
3f89b61dd504c5b6711de9759e053b082f9abf12
Fixed
bb190628fe5f2a73ba762a9972ba16c5e895f73e
Fixed
c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23271.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.6.31
Fixed
6.1.167
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.130
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.77
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.17
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23271.json"