CVE-2025-40205

CVE-2025-40205 affects the Linux kernel Btrfs code (btrfs_encode_fh). The issue: btrfs_encode_fh() can write beyond the allocated fh payload when a parent exists and the parent root_id differs from the inode root, because it may return BTRFS_FID_SIZE_CONNECTABLE_ROOT (40 bytes) even though the ca...