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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-31528 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: perf: Make sure to use pmu_ctx->pmu for groups Oliver reported that x86_pmu_del() ended up doing an out-of-bound memory access when group_sched_in() fails and needs to roll back. This *should* be handled by the transaction callbacks, but he found that when the group leader is a software event, the transaction handlers of the wrong PMU are used. Despite the move_group case in perf_event_open() and group_sched_in() using pmu_ctx->pmu. Turns out, inherit uses event->pmu to clone the events, effectively undoing the move_group case for all inherited contexts. Fix this by also making inherit use pmu_ctx->pmu, ensuring all inherited counters end up in the same pmu context. Similarly, __perf_event_read() should use equally use pmu_ctx->pmu for the group case.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/35f7914e54fe7f13654c22ee045b05e4b6d8062b kernel.org
https://git.kernel.org/stable/c/3a696e84a8b1fafdd774bb30d62919faf844d9e4 kernel.org
https://git.kernel.org/stable/c/4b9ce671960627b2505b3f64742544ae9801df97 kernel.org
https://git.kernel.org/stable/c/4c759446046500a1a6785b25725725c3ff087ace kernel.org
https://git.kernel.org/stable/c/656f35b463995bee024d948440128230aacd81e1 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-31528
NVD Published Date:
04/22/2026
NVD Last Modified:
04/23/2026
Source:
kernel.org