CVE-2023-53254
- Source
- https://cve.org/CVERecord?id=CVE-2023-53254
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53254.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-53254
- Downstream
- Related
- Published
- 2025-09-15T14:46:24Z
- Modified
- 2026-08-12T03:51:43Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- cacheinfo: Fix shared_cpu_map to handle shared caches at different levels
- Details
-
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.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53254.json" }- References
-
- https://git.kernel.org/stable/c/198102c9103fc78d8478495971947af77edb05c1
- https://git.kernel.org/stable/c/2f588d0345d69a35e451077afed428fd057a5e34
- https://git.kernel.org/stable/c/dea49f2993f57d8a2df2cacb0bf649ef49b28879
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53254.json
- https://nvd.nist.gov/vuln/detail/CVE-2023-53254
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git