Medium 5.5Published May 6, 2026

CVE-2026-43079perf/x86/intel/uncore: Skip discovery table for offline dies

Updated under an hour ago (Oct 28, 2026, 5:10 AM ET)

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Exploited in the last 30 days

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.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before d18da11a5e21eac7651c8897e5e0908f6c2bc9de; from edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before dfcba8c8674cead6c88a2f269b71aa4efd3d384a; from edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before cfab2c817d2e7e0bee98d66850246ce842ed5f18; from edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before 6cfc187d85f18f976d0fe527d4c6f6171542cc19; from edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before f34feda8e0c9535fee3f8870ce8bab53c2798f71; from edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before 7a2cb02437d92ed14fe494d8994056d5bd2c72b4; from edae1f06c2cda41edffc93de6aedc8ba8dc883c3 before 7b568e9eba2fad89a696f22f0413d44cf4a1f892	CNA record
linux linux_kernel linux:linux_kernel	from 5.13 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.136; from 6.7 before 6.12.83; from 6.13 before 6.18.24; from 6.19 before 6.19.14; 7.0; 7.0; and 5 more ranges	NVD

References

References

https://git.kernel.org/stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9de	patch
https://git.kernel.org/stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384a	patch
https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18	patch
https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19	patch
https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71	patch
https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4	patch
https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.