CVE-2026-43079

Summary

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.

Impact & exploitability

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19 ↗

Additional information

• NVD record
• https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19Patch
• https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4Patch
• https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892Patch
• https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18Patch
• https://git.kernel.org/stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9dePatch
• https://git.kernel.org/stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384aPatch
• https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71Patch