Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: cacheinfo: Fix shared_cpu_map to handle shared caches at different levels The cacheinfo sets up the shared_cpu_map by checking whether the caches with the same index are shared between CPUs. However, this will trigger slab-out-of-bounds access if the CPUs do not have the same cache hierarchy. Another problem is the mismatched shared_cpu_map when the shared cache does not have the same index between CPUs. CPU0 I D L3 index 0 1 2 x ^ ^ ^ ^ index 0 1 2 3 CPU1 I D L2 L3 This patch checks each cache is shared with all caches on other CPUs.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.1.18 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/198102c9103fc78d8478495971947af77edb05c1Patch
- https://git.kernel.org/stable/c/2f588d0345d69a35e451077afed428fd057a5e34Patch
- https://git.kernel.org/stable/c/dea49f2993f57d8a2df2cacb0bf649ef49b28879Patch
FAQ
What is CVE-2023-53254?
CVE-2023-53254 is a vulnerability with a CVSS score of 7.1 (HIGH). In the Linux kernel, the following vulnerability has been resolved: cacheinfo: Fix shared_cpu_map to handle shared caches at different levels The cacheinfo sets up the shared_cpu_map by checking whe...
How severe is CVE-2023-53254?
CVE-2023-53254 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-53254?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.