CVE-2026-43079
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.
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.12% probability · 2th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.