CVE-2026-31782
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.19.12-1 |
| debian | sid | fixed | 6.19.12-1 |
| debian | trixie | fixed | 0 |
| linux-kernel | affected | 6.18.22 | |
| linux-kernel | 6.16 | affected | |
| linux-kernel | 7.0 | affected | |
References
- https://git.kernel.org/stable/c/bfee04838f636d064bc92075c65c95f739003804
- https://git.kernel.org/stable/c/dbde07f06226438cd2cf1179745fa1bec5d8914a
- https://git.kernel.org/stable/c/e435a30ca6fe14c9611b1fc731c98a6d28410247
- https://www.suse.com/security/cve/CVE-2026-31782.html
- https://security-tracker.debian.org/tracker/CVE-2026-31782
CWEs
CWE-125
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.