{"id":"DEBIAN-CVE-2026-80879","details":"In the Linux kernel, the following vulnerability has been resolved:  ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write  A circular locking dependency involves INODE_ALLOC_SYSTEM_INODE, EXTENT_ALLOC_SYSTEM_INODE, and ORPHAN_DIR_SYSTEM_INODE.  1. ocfs2_mknod() acquires INODE_ALLOC then EXTENT_ALLOC.  2. ocfs2_dio_end_io_write() acquires EXTENT_ALLOC for unwritten    extents, then ORPHAN_DIR via ocfs2_del_inode_from_orphan() while still    holding EXTENT_ALLOC.  3. ocfs2_wipe_inode() acquires ORPHAN_DIR then INODE_ALLOC via    ocfs2_remove_inode.  Break the cycle in ocfs2_dio_end_io_write() by freeing the allocation contexts (releasing EXTENT_ALLOC) before acquiring ORPHAN_DIR.  WARNING: possible circular locking dependency detected ------------------------------------------------------ is trying to acquire lock: ffff8881e78b33a0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299  but task is already holding lock: ffff8881e78b4fa0 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}, at: ocfs2_evict_inode+0xe97/0x43b0 fs/ocfs2/inode.c:1299  the existing dependency chain (in reverse order) is:  -\u003e #2 (&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]){+.+.}-{4:4}:        inode_lock include/linux/fs.h:1029 [inline]        ocfs2_del_inode_from_orphan+0x12e/0x7a0 fs/ocfs2/namei.c:2728        ocfs2_dio_end_io+0xf9c/0x1370 fs/ocfs2/aops.c:2418        dio_complete+0x25b/0x790 fs/direct-io.c:281  -\u003e #1 (&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:        inode_lock include/linux/fs.h:1029 [inline]        ocfs2_reserve_suballoc_bits+0x16d/0x4840 fs/ocfs2/suballoc.c:882        ocfs2_reserve_new_metadata_blocks+0x415/0x9a0        fs/ocfs2/suballoc.c:1078        ocfs2_mknod+0x10f3/0x2260 fs/ocfs2/namei.c:351  -\u003e #0 (&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]){+.+.}-{4:4}:        __lock_acquire+0x15a5/0x2cf0 kernel/locking/lockdep.c:5237        lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868        down_write+0x96/0x200 kernel/locking/rwsem.c:1625        inode_lock include/linux/fs.h:1029 [inline]        ocfs2_remove_inode fs/ocfs2/inode.c:733 [inline]        ocfs2_wipe_inode fs/ocfs2/inode.c:896 [inline]        ocfs2_delete_inode fs/ocfs2/inode.c:1157 [inline]        ocfs2_evict_inode+0x1539/0x43b0 fs/ocfs2/inode.c:1299  Chain exists of:   &ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE] --\u003e   &ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE] --\u003e   &ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]   Possible unsafe locking scenario:         CPU0                    CPU1        ----                    ----   lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);                                lock(&ocfs2_sysfile_lock_key[EXTENT_ALLOC_SYSTEM_INODE]);                                lock(&ocfs2_sysfile_lock_key[ORPHAN_DIR_SYSTEM_INODE]);   lock(&ocfs2_sysfile_lock_key[INODE_ALLOC_SYSTEM_INODE]);   *** DEADLOCK ***","modified":"2026-09-14T16:47:29.896558874Z","published":"2026-09-04T17:17:00.080Z","upstream":["CVE-2026-80879"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-80879"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.180-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.148-1","6.1.153-1","6.1.158-1","6.1.159-1","6.1.162-1","6.1.164-1","6.1.170-1","6.1.170-2","6.1.170-3","6.1.172-1","6.1.174-1","6.1.176-1","6.1.177-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not 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