perf/x86/intel/uncore: Skip discovery table for offline dies
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
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 products
Linux · LinuxReferences
https://git.kernel.org/stable/c/6cfc187d85f18f976d0fe527d4c6f6171542cc19https://git.kernel.org/stable/c/7a2cb02437d92ed14fe494d8994056d5bd2c72b4https://git.kernel.org/stable/c/7b568e9eba2fad89a696f22f0413d44cf4a1f892https://git.kernel.org/stable/c/cfab2c817d2e7e0bee98d66850246ce842ed5f18https://git.kernel.org/stable/c/d18da11a5e21eac7651c8897e5e0908f6c2bc9dehttps://git.kernel.org/stable/c/dfcba8c8674cead6c88a2f269b71aa4efd3d384ahttps://git.kernel.org/stable/c/f34feda8e0c9535fee3f8870ce8bab53c2798f71