CVE-2023-53254 (GCVE-0-2023-53254)
Vulnerability from cvelistv5
Published
2025-09-15 14:46
Modified
2026-05-11 19:41
Severity ?
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 246246cbde5e840012f853e27630ebb59f409486
Version: 246246cbde5e840012f853e27630ebb59f409486
Version: 246246cbde5e840012f853e27630ebb59f409486
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