perf/x86/intel/uncore: Skip discovery table for offline dies

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Summary

CVECVE-2026-43079
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 10:16:20 UTC
Updated2026-05-06 13:08:07 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: perf/x86/intel/uncore: Skip discovery table for offline dies This warning can be triggered if NUMA is disabled and the system boots with fewer CPUs than the number of CPUs in die 0. WARNING: CPU: 9 PID: 7257 at uncore.c:1157 uncore_pci_pmu_register+0x136/0x160 [intel_uncore] Currently, the discovery table continues to be parsed even if all CPUs in the associated die are offline. This can lead to an array overflow at "pmu->boxes[die] = box" in uncore_pci_pmu_register(), which may trigger the warning above or cause other issues.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 cfab2c817d2e7e0bee98d66850246ce842ed5f18 git Not specified
CNA Linux Linux affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 6cfc187d85f18f976d0fe527d4c6f6171542cc19 git Not specified
CNA Linux Linux affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 f34feda8e0c9535fee3f8870ce8bab53c2798f71 git Not specified
CNA Linux Linux affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 7a2cb02437d92ed14fe494d8994056d5bd2c72b4 git Not specified
CNA Linux Linux affected edae1f06c2cda41edffc93de6aedc8ba8dc883c3 7b568e9eba2fad89a696f22f0413d44cf4a1f892 git Not specified
CNA Linux Linux affected 5.13 Not specified
CNA Linux Linux unaffected 5.13 semver Not specified
CNA Linux Linux unaffected 6.6.136 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.83 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.24 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.14 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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