High 7.8Published May 1, 2026

CVE-2026-31782perf/x86: Fix potential bad container_of in intel_pmu_hw_config

Updated under an hour ago (Oct 27, 2026, 9:00 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: perf/x86: Fix potential bad container_of in intel_pmu_hw_config Auto counter reload may have a group of events with software events present within it. The software event PMU isn't the x86_hybrid_pmu and a container_of operation in intel_pmu_set_acr_caused_constr (via the hybrid helper) could cause out of bound memory reads. Avoid this by guarding the call to intel_pmu_set_acr_caused_constr with an is_x86_event check.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from ec980e4facef8110f6fce27e5b6344660117f01f before e435a30ca6fe14c9611b1fc731c98a6d28410247; from ec980e4facef8110f6fce27e5b6344660117f01f before bfee04838f636d064bc92075c65c95f739003804; from ec980e4facef8110f6fce27e5b6344660117f01f before dbde07f06226438cd2cf1179745fa1bec5d8914a	CNA record
linux linux_kernel linux:linux_kernel	from 6.16.1 before 6.18.22; from 6.19 before 6.19.12; 6.16; 7.0; 7.0; 7.0; 7.0; 7.0; and 1 more ranges	NVD

References

References

https://git.kernel.org/stable/c/e435a30ca6fe14c9611b1fc731c98a6d28410247	patch
https://git.kernel.org/stable/c/bfee04838f636d064bc92075c65c95f739003804	patch
https://git.kernel.org/stable/c/dbde07f06226438cd2cf1179745fa1bec5d8914a	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.