CVE-2026-31782

high

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 h…

Vendor / product: Linux — linux kernel

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

7.8 (CVSS v3.1)

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

Severity source: NVD CVSS v3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)

Timeline (UTC)

Published: 2026-05-01 15:16

Modified: 2026-11-11 21:10

NVD status: Analyzed

Last synced 5 hours ago

Verified against the source API 2026-11-11 21:11 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥6.16.1 <6.18.22, ≥6.19 <6.19.12, 6.16, 7.0

Weakness classification (CWE)

CWE-125

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/bfee04838f636d064bc92075c65c95f739003804

Patch / mitigation: https://git.kernel.org/stable/c/dbde07f06226438cd2cf1179745fa1bec5d8914a

Patch / mitigation: https://git.kernel.org/stable/c/e435a30ca6fe14c9611b1fc731c98a6d28410247

References

https://git.kernel.org/stable/c/bfee04838f636d064bc92075c65c95f739003804 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/dbde07f06226438cd2cf1179745fa1bec5d8914a 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/e435a30ca6fe14c9611b1fc731c98a6d28410247 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 21:11 UTC · record ↗

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CVE-2026-31782

Affected products

Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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