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Description

In 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.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-06 | Updated 2026-05-06 | Assigner Linux

Product status

Default status
unaffected

edae1f06c2cda41edffc93de6aedc8ba8dc883c3 (git) before cfab2c817d2e7e0bee98d66850246ce842ed5f18
affected

edae1f06c2cda41edffc93de6aedc8ba8dc883c3 (git) before 6cfc187d85f18f976d0fe527d4c6f6171542cc19
affected

edae1f06c2cda41edffc93de6aedc8ba8dc883c3 (git) before f34feda8e0c9535fee3f8870ce8bab53c2798f71
affected

edae1f06c2cda41edffc93de6aedc8ba8dc883c3 (git) before 7a2cb02437d92ed14fe494d8994056d5bd2c72b4
affected

edae1f06c2cda41edffc93de6aedc8ba8dc883c3 (git) before 7b568e9eba2fad89a696f22f0413d44cf4a1f892
affected

Default status
affected

5.13
affected

Any version before 5.13
unaffected

6.6.136 (semver)
unaffected

6.12.83 (semver)
unaffected

6.18.24 (semver)
unaffected

6.19.14 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/cfab2c817d2e7e0bee98d66850246ce842ed5f18

git.kernel.org/...c/6cfc187d85f18f976d0fe527d4c6f6171542cc19

git.kernel.org/...c/f34feda8e0c9535fee3f8870ce8bab53c2798f71

git.kernel.org/...c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4

git.kernel.org/...c/7b568e9eba2fad89a696f22f0413d44cf4a1f892

cve.org (CVE-2026-43079)

nvd.nist.gov (CVE-2026-43079)

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