perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-53114
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-24 17:17:25 UTC
Updated2026-07-14 15:26:52 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: perf/amd/ibs: Avoid calling perf_allow_kernel() from the IBS NMI handler Calling perf_allow_kernel() from the NMI context is unsafe and could be fatal. Capture the permission at event-initialization time by storing it in event->hw.flags, and have the NMI handler rely on that cached flag instead of making the call directly.

Risk And Classification

EPSS: 0.001540000 probability, percentile 0.050070000 (date 2026-07-14)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 50a53b60e141d7e31368a87e222e4dd5597bd4ae 2783ed2442ce69ae240b787aee6dae801cef7aec git Not specified
CNA Linux Linux affected 50a53b60e141d7e31368a87e222e4dd5597bd4ae 0584e74fa2b27e9e722cfb5b579f79263df20040 git Not specified
CNA Linux Linux affected 50a53b60e141d7e31368a87e222e4dd5597bd4ae b0a09142622a994c4f4088c3f61db5da87cfc711 git Not specified
CNA Linux Linux affected 6.14 Not specified
CNA Linux Linux unaffected 6.14 semver Not specified
CNA Linux Linux unaffected 6.18.33 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.10 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0584e74fa2b27e9e722cfb5b579f79263df20040 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/b0a09142622a994c4f4088c3f61db5da87cfc711 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2783ed2442ce69ae240b787aee6dae801cef7aec 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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