Medium severity5.5NVD Advisory· Published May 6, 2026· Updated Jun 1, 2026
CVE-2026-43079
CVE-2026-43079
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 8 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.13,<5.15.209
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
- (no CPE)
Patches
Vulnerability mechanics
References
7- git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19nvdPatch
- git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4nvdPatch
- git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892nvdPatch
- git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18nvdPatch
- git.kernel.org/stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9denvdPatch
- git.kernel.org/stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384anvdPatch
- git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71nvdPatch
News mentions
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