Threats tagged 'ghsa-44gm-xvpq-cmx6'

A vulnerability in the Linux kernel's memory management subsystem causes silent data loss for processes using MAP_SHARED tmpfs segments with transparent huge pages (THP) enabled and swap enabled. The issue arises because the pmd dirty bit is not transferred to the folio on unmapping, leading to data not being swapped out and lost upon reclaim. This affects scenarios where state is shared across process generations via tmpfs, such as /dev/shm caches.