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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
246246cbde5e840012f853e27630ebb59f409486 to < 2f588d0345d69a35e451077afed428fd057a5e34affected246246cbde5e840012f853e27630ebb59f409486 to < dea49f2993f57d8a2df2cacb0bf649ef49b28879affected246246cbde5e840012f853e27630ebb59f409486 to < 198102c9103fc78d8478495971947af77edb05c1affected
Linux Linux
Default version status: affected
3.19affected0 to < 3.19unaffected6.1.18 to ≤ 6.1.*unaffected6.2.5 to ≤ 6.2.*unaffected6.3 to ≤ *unaffected