perf: Fix __perf_event_overflow() vs perf_remove_from_context() race
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.
CVE-2026-23271
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-23271
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "592903cdcbf606a838056bae6d03fc557806c914",
"lessThan": "4df1a45819e50993cb351682a6ae8e7ed2d233a0",
"versionType": "git"
},
{
"status": "affected",
"version": "592903cdcbf606a838056bae6d03fc557806c914",
"lessThan": "4f8d5812337871227bb2c98669a87c306a2f86ef",
"versionType": "git"
},
{
"status": "affected",
"version": "592903cdcbf606a838056bae6d03fc557806c914",
"lessThan": "5c48fdc4b4623533d86e279f51531a7ba212eb87",
"versionType": "git"
},
{
"status": "affected",
"version": "592903cdcbf606a838056bae6d03fc557806c914",
"lessThan": "3f89b61dd504c5b6711de9759e053b082f9abf12",
"versionType": "git"
},
{
"status": "affected",
"version": "592903cdcbf606a838056bae6d03fc557806c914",
"lessThan": "bb190628fe5f2a73ba762a9972ba16c5e895f73e",
"versionType": "git"
},
{
"status": "affected",
"version": "592903cdcbf606a838056bae6d03fc557806c914",
"lessThan": "c9bc1753b3cc41d0e01fbca7f035258b5f4db0ae",
"versionType": "git"
}
],
"programFiles": [
"kernel/events/core.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.31"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.31",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.167",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.130",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.77",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.17",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "6.19.7",
"versionType": "semver",
"lessThanOrEqual": "6.19.*"
},
{
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"kernel/events/core.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-23271
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #39831 · Revision 1
- Added to Heist Feed
- Publisher date