{"id":"DEBIAN-CVE-2026-68096","details":"In the Linux kernel, the following vulnerability has been resolved:  audit: fix recursive locking deadlock in audit_dupe_exe()  A deadlock occurs in the audit subsystem when duplicating executable-related rules.  When a file is moved (e.g., via do_renameat2()), the VFS layer locks the parent directory (I_MUTEX_PARENT), which synchronously triggers an fsnotify_move event. If an existing executable audit rule matches the file being moved, the audit subsystem catches this event and calls audit_dupe_exe() to duplicate the watch and update the rule. Then, audit_alloc_mark() would call kern_path_parent() to resolve the path, leading to a blind attempt to acquire the exact same I_MUTEX_PARENT lock already held by the task, resulting in the following recursive locking deadlock:   ============================================  WARNING: possible recursive locking detected  6.12.0-55.27.1.el10_0.x86_64+debug #1 Not tainted  --------------------------------------------  mv/5099 is trying to acquire lock:  ffff888132845358 (&inode-\u003ei_sb-\u003es_type-\u003ei_mutex_dir_key/1){+.+.}-{3:3},  at: __kern_path_locked+0x10a/0x2f0   but task is already holding lock:  ffff888132846b58 (&inode-\u003ei_sb-\u003es_type-\u003ei_mutex_dir_key/1){+.+.}-{3:3},  at: lock_two_directories+0x13f/0x2b0   other info that might help us debug this:   Possible unsafe locking scenario:          CPU0         ----    lock(&inode-\u003ei_sb-\u003es_type-\u003ei_mutex_dir_key/1);    lock(&inode-\u003ei_sb-\u003es_type-\u003ei_mutex_dir_key/1);    *** DEADLOCK ***    May be due to missing lock nesting notation    6 locks held by mv/5099:   #0: ffff888112a9c440 (sb_writers#13)   at: do_renameat2+0x34c/0xbc0   #1: ffff888112a9c790 (&type-\u003es_vfs_rename_key#3)   at: do_renameat2+0x415/0xbc0   #2: ffff888132846b58 (&inode-\u003ei_sb-\u003es_type-\u003ei_mutex_dir_key/1)   at: lock_two_directories+0x13f/0x2b0   #3: ffff888132845358 (&inode-\u003ei_sb-\u003es_type-\u003ei_mutex_dir_key/5)   at: lock_two_directories+0x175/0x2b0   #4: ffffffffb3a1fb10 (&fsnotify_mark_srcu)   at: fsnotify+0x454/0x28a0   #5: ffffffffaf886230 (audit_filter_mutex)   at: audit_update_watch+0x36/0x11e0   stack backtrace:  Call Trace:   \u003cTASK\u003e   dump_stack_lvl+0x6f/0xb0   print_deadlock_bug.cold+0xbd/0xca   validate_chain+0x83a/0xf00   __lock_acquire+0xcac/0x1d20   lock_acquire.part.0+0x11b/0x360   down_write_nested+0x9f/0x230   __kern_path_locked+0x10a/0x2f0   kern_path_locked+0x26/0x40   audit_alloc_mark+0xfb/0x4f0   audit_dupe_exe+0x6c/0xe0   audit_dupe_rule+0x6c2/0xc00   audit_update_watch+0x4cc/0x11e0   audit_watch_handle_event+0x12c/0x1b0   send_to_group+0x5d0/0x8b0   fsnotify+0x615/0x28a0   fsnotify_move+0x1d8/0x630   vfs_rename+0xdcd/0x1df0   do_renameat2+0x9d4/0xbc0   __x64_sys_renameat+0x192/0x260   do_syscall_64+0x92/0x180   entry_SYSCALL_64_after_hwframe+0x76/0x7e  RIP: 0033:0x7f0491fe8c4e  Code: 0f 1f 40 00 48 8b 15 c1 e1 16 00 f7 d8 64 89 02 b8 ff ff ff ff  c3 66 0f 1f 44 00 00 f3 0f 1e fa 49 89 ca b8 08 01 00 00 0f 05 \u003c48\u003e  3d 00 f0 ff ff 77 0a c3 66 0f 1f 84 00 00 00 00 00 48 8b 15 89  RSP: 002b:00007ffc7210bf38 EFLAGS: 00000246 ORIG_RAX: 0000000000000108  RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0491fe8c4e  RDX: 0000000000000003 RSI: 00007ffc7210e6c8 RDI: 00000000ffffff9c  RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001  R10: 00005575eb2dae2a R11: 0000000000000246 R12: 00005575eb2dae2a  R13: 00007ffc7210e6c8 R14: 0000000000000003 R15: 00000000ffffff9c   \u003c/TASK\u003e  The aforementioned deadlock can be consistently reproduced by running the script below:   audit-dupe-exe-deadlock.sh  --------------------------  #!/bin/bash  auditctl -D  mkdir -p /tmp/foo  touch /tmp/file  auditctl -a always,exit -F exe=/tmp/file -F path=/tmp/file -S all -k dr  mv /tmp/file /tmp/foo/file  rm -Rf /tmp/foo  This patch fixes the issue by introducing struct audit_watch_ctx to pass the fsnotify event context down to audit_alloc_mark(). By utilizing the already-resolved directory inode provided by the event, we bypass the kern_path_parent() path resol ---truncated---","modified":"2026-09-08T17:00:15.228411778Z","published":"2026-08-10T13:19:53.837Z","upstream":["CVE-2026-68096"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-68096"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.187-1"}]}],"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","6.1.180-1","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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