CVE-2026-43079
perf/x86/intel/uncore: Skip discovery table for offline dies
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18
- https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19
- https://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71
- https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4
- https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892
References (7)
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Quick Info
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