CVE-2025-37779

CVE-2025-37779 pertains to the Linux kernel. A folio refcount bug in lib/iov_iter caused a UAF when an EROFS file-backed mount over 9P (v9fs) on QEMU was exercised, due to pages in bvec being coalesced across a folio boundary. The root cause was inadequate refcount handling for non-slab folios, p...