CVE-2026-43079
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
W jądrze Linuxa zidentyfikowano podatność, która występuje, gdy NUMA jest wyłączona, a system uruchamia się z mniejszą liczbą CPU niż liczba CPU w die 0. Może to prowadzić do przepełnienia tablicy w funkcji uncore_pci_pmu_register().
Risk Assessment
Podatność ta może prowadzić do poważnych problemów z wydajnością systemu oraz generować ostrzeżenia, co może wpłynąć na stabilność działania aplikacji i usług.
Recommendation
Zaleca się aktualizację jądra Linuxa do najnowszej wersji, aby usunąć tę podatność oraz monitorowanie systemu pod kątem wystąpienia podobnych ostrzeżeń.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

