{"id":"DEBIAN-CVE-2025-71065","details":"In the Linux kernel, the following vulnerability has been resolved:  f2fs: fix to avoid potential deadlock  As Jiaming Zhang and syzbot reported, there is potential deadlock in f2fs as below:  Chain exists of:   &sbi-\u003ecp_rwsem --\u003e fs_reclaim --\u003e sb_internal#2   Possible unsafe locking scenario:         CPU0                    CPU1        ----                    ----   rlock(sb_internal#2);                                lock(fs_reclaim);                                lock(sb_internal#2);   rlock(&sbi-\u003ecp_rwsem);   *** DEADLOCK ***  3 locks held by kswapd0/73:  #0: ffffffff8e247a40 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat mm/vmscan.c:7015 [inline]  #0: ffffffff8e247a40 (fs_reclaim){+.+.}-{0:0}, at: kswapd+0x951/0x2800 mm/vmscan.c:7389  #1: ffff8880118400e0 (&type-\u003es_umount_key#50){.+.+}-{4:4}, at: super_trylock_shared fs/super.c:562 [inline]  #1: ffff8880118400e0 (&type-\u003es_umount_key#50){.+.+}-{4:4}, at: super_cache_scan+0x91/0x4b0 fs/super.c:197  #2: ffff888011840610 (sb_internal#2){.+.+}-{0:0}, at: f2fs_evict_inode+0x8d9/0x1b60 fs/f2fs/inode.c:890  stack backtrace: CPU: 0 UID: 0 PID: 73 Comm: kswapd0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace:  \u003cTASK\u003e  dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120  print_circular_bug+0x2ee/0x310 kernel/locking/lockdep.c:2043  check_noncircular+0x134/0x160 kernel/locking/lockdep.c:2175  check_prev_add kernel/locking/lockdep.c:3165 [inline]  check_prevs_add kernel/locking/lockdep.c:3284 [inline]  validate_chain+0xb9b/0x2140 kernel/locking/lockdep.c:3908  __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237  lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868  down_read+0x46/0x2e0 kernel/locking/rwsem.c:1537  f2fs_down_read fs/f2fs/f2fs.h:2278 [inline]  f2fs_lock_op fs/f2fs/f2fs.h:2357 [inline]  f2fs_do_truncate_blocks+0x21c/0x10c0 fs/f2fs/file.c:791  f2fs_truncate_blocks+0x10a/0x300 fs/f2fs/file.c:867  f2fs_truncate+0x489/0x7c0 fs/f2fs/file.c:925  f2fs_evict_inode+0x9f2/0x1b60 fs/f2fs/inode.c:897  evict+0x504/0x9c0 fs/inode.c:810  f2fs_evict_inode+0x1dc/0x1b60 fs/f2fs/inode.c:853  evict+0x504/0x9c0 fs/inode.c:810  dispose_list fs/inode.c:852 [inline]  prune_icache_sb+0x21b/0x2c0 fs/inode.c:1000  super_cache_scan+0x39b/0x4b0 fs/super.c:224  do_shrink_slab+0x6ef/0x1110 mm/shrinker.c:437  shrink_slab_memcg mm/shrinker.c:550 [inline]  shrink_slab+0x7ef/0x10d0 mm/shrinker.c:628  shrink_one+0x28a/0x7c0 mm/vmscan.c:4955  shrink_many mm/vmscan.c:5016 [inline]  lru_gen_shrink_node mm/vmscan.c:5094 [inline]  shrink_node+0x315d/0x3780 mm/vmscan.c:6081  kswapd_shrink_node mm/vmscan.c:6941 [inline]  balance_pgdat mm/vmscan.c:7124 [inline]  kswapd+0x147c/0x2800 mm/vmscan.c:7389  kthread+0x70e/0x8a0 kernel/kthread.c:463  ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158  ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245  \u003c/TASK\u003e  The root cause is deadlock among four locks as below:  kswapd - fs_reclaim\t\t\t\t--- Lock A  - shrink_one   - evict    - f2fs_evict_inode     - sb_start_intwrite\t\t\t--- Lock B  - iput  - evict   - f2fs_evict_inode    - sb_start_intwrite\t\t\t--- Lock B    - f2fs_truncate     - f2fs_truncate_blocks      - f2fs_do_truncate_blocks       - f2fs_lock_op\t\t\t--- Lock C  ioctl - f2fs_ioc_commit_atomic_write  - f2fs_lock_op\t\t\t\t--- Lock C   - __f2fs_commit_atomic_write    - __replace_atomic_write_block     - f2fs_get_dnode_of_data      - __get_node_folio       - f2fs_check_nid_range        - f2fs_handle_error         - f2fs_record_errors          - f2fs_down_write\t\t--- Lock D  open - do_open  - do_truncate   - security_inode_need_killpriv    - f2fs_getxattr     - lookup_all_xattrs      - f2fs_handle_error       - f2fs_record_errors        - f2fs_down_write\t\t--- Lock D         - f2fs_commit_super          - read_mapping_folio           - filemap_alloc_folio_noprof            - prepare_alloc_pages             - fs_reclaim_acquire\t--- Lock A  In order to a ---truncated---","modified":"2026-04-28T20:32:06.890345Z","published":"2026-01-13T16:16:05.853Z","upstream":["CVE-2025-71065"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-71065"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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","6.1.27-1","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","6.10-1~exp1","6.10.1-1~exp1","6.10.11-1","6.10.11-1~bpo12+1","6.10.12-1","6.10.3-1","6.10.4-1","6.10.6-1","6.10.6-1~bpo12+1","6.10.7-1","6.10.9-1","6.11-1~exp1","6.11.10-1","6.11.10-1~bpo12+1","6.11.2-1","6.11.4-1","6.11.5-1","6.11.5-1~bpo12+1","6.11.6-1","6.11.7-1","6.11.9-1","6.11~rc4-1~exp1","6.11~rc5-1~exp1","6.12.10-1","6.12.11-1","6.12.11-1+alpha","6.12.11-1+alpha.1","6.12.12-1","6.12.12-1~bpo12+1","6.12.13-1","6.12.15-1","6.12.16-1","6.12.17-1","6.12.19-1","6.12.20-1","6.12.21-1","6.12.22-1","6.12.22-1~bpo12+1","6.12.25-1","6.12.27-1","6.12.27-1~bpo12+1","6.12.29-1","6.12.3-1","6.12.30-1","6.12.30-1~bpo12+1","6.12.31-1","6.12.32-1","6.12.32-1~bpo12+1","6.12.33-1","6.12.33-1~bpo12+1","6.12.35-1","6.12.35-1~bpo12+1","6.12.37-1","6.12.38-1","6.12.38-1~bpo12+1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.5-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.6-1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.8-1","6.12.9-1","6.12.9-1+alpha","6.12.9-1~bpo12+1","6.12~rc6-1~exp1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.10-1","6.18.12-1","6.18.12-1~bpo13+1","6.18.13-1","6.18.14-1","6.18.15-1","6.18.15-1~bpo13+1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18.8-1","6.18.9-1","6.18.9-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1","6.19-1~exp1","6.19.10-1","6.19.10-1~bpo13+1","6.19.11-1","6.19.11-1~bpo13+1","6.19.12-1","6.19.13-1","6.19.14-1","6.19.2-1~exp1","6.19.3-1~exp1","6.19.4-1~exp1","6.19.5-1~exp1","6.19.6-1","6.19.6-2","6.19.6-2~bpo13+1","6.19.8-1","6.19.8-1~bpo13+1","6.19~rc4-1~exp1","6.19~rc5-1~exp1","6.19~rc6-1~exp1","6.19~rc7-1~exp1","6.19~rc8-1~exp1","6.3.1-1~exp1","6.3.11-1","6.3.2-1~exp1","6.3.4-1~exp1","6.3.5-1~exp1","6.3.7-1","6.3.7-1~bpo12+1","6.4.1-1~exp1","6.4.11-1","6.4.13-1","6.4.4-1","6.4.4-1~bpo12+1","6.4.4-2","6.4.4-3","6.4.4-3~bpo12+1","6.4~rc6-1~exp1","6.4~rc7-1~exp1","6.5.1-1~exp1","6.5.10-1","6.5.10-1~bpo12+1","6.5.13-1","6.5.3-1","6.5.3-1~bpo12+1","6.5.6-1","6.5.8-1","6.5~rc4-1~exp1","6.5~rc6-1~exp1","6.5~rc7-1~exp1","6.6.11-1","6.6.13-1","6.6.13-1~bpo12+1","6.6.15-1","6.6.15-2","6.6.3-1~exp1","6.6.4-1~exp1","6.6.7-1~exp1","6.6.8-1","6.6.9-1","6.7-1~exp1","6.7.1-1~exp1","6.7.12-1","6.7.12-1~bpo12+1","6.7.4-1~exp1","6.7.7-1","6.7.9-1","6.7.9-2","6.8.11-1","6.8.12-1","6.8.12-1~bpo12+1","6.8.9-1","6.9.10-1","6.9.10-1~bpo12+1","6.9.11-1","6.9.12-1","6.9.2-1~exp1","6.9.7-1","6.9.7-1~bpo12+1","6.9.8-1","6.9.9-1","7.0-1~exp1","7.0.1-1~exp1"],"ecosystem_specific":{"urgency":"not 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