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.
Product status
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 2f588d0345d69a35e451077afed428fd057a5e34
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before dea49f2993f57d8a2df2cacb0bf649ef49b28879
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (git) before 198102c9103fc78d8478495971947af77edb05c1
6.1.18 (semver)
6.2.5 (semver)
6.3 (original_commit_for_fix)
References
git.kernel.org/...c/2f588d0345d69a35e451077afed428fd057a5e34
git.kernel.org/...c/dea49f2993f57d8a2df2cacb0bf649ef49b28879
git.kernel.org/...c/198102c9103fc78d8478495971947af77edb05c1
