CVE-2025-38241 is a medium severity vulnerability in the Linux kernel's memory management subsystem related to shmem and swap. It causes a soft lockup (CPU stuck) due to a conflict during the swapin of a transparent huge page (mTHP) folio. This results in a retry loop that leads to a system hang. The issue occurs when readahead brings an order 0 folio into the swap cache, conflicting with the mTHP folio allocation. The vulnerability has been fixed with a patch that applies a similar fix used for anonymous mTHP swapin. The performance impact of the fix is negligible.