CVE-2026-43079
perf/x86/intel/uncore: Skip discovery table for offline dies
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
5.13
References 7
git.kernel.org
- stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9de
- stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384a
- stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18
- stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19
- stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71
- stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4
- stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892