CVE-2026-31782

HighCVSS 7.8/10Last modified Nov 11, 2026

Description

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
Linux	Linux	>= ec980e4facef8110f6fce27e5b6344660117f01f, < e435a30ca6fe14c9611b1fc731c98a6d28410247; >= ec980e4facef8110f6fce27e5b6344660117f01f, < bfee04838f636d064bc92075c65c95f739003804; >= ec980e4facef8110f6fce27e5b6344660117f01f, < dbde07f06226438cd2cf1179745fa1bec5d8914a
Linux	Linux	6.16

References

Timeline

Published: May 1, 2026
Last modified: Nov 11, 2026
NVD status: Analyzed

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