{"id":"CVE-2023-54045","summary":"audit: fix possible soft lockup in __audit_inode_child()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\naudit: fix possible soft lockup in __audit_inode_child()\n\nTracefs or debugfs maybe cause hundreds to thousands of PATH records,\ntoo many PATH records maybe cause soft lockup.\n\nFor example:\n  1. CONFIG_KASAN=y && CONFIG_PREEMPTION=n\n  2. auditctl -a exit,always -S open -k key\n  3. sysctl -w kernel.watchdog_thresh=5\n  4. mkdir /sys/kernel/debug/tracing/instances/test\n\nThere may be a soft lockup as follows:\n  watchdog: BUG: soft lockup - CPU#45 stuck for 7s! [mkdir:15498]\n  Kernel panic - not syncing: softlockup: hung tasks\n  Call trace:\n   dump_backtrace+0x0/0x30c\n   show_stack+0x20/0x30\n   dump_stack+0x11c/0x174\n   panic+0x27c/0x494\n   watchdog_timer_fn+0x2bc/0x390\n   __run_hrtimer+0x148/0x4fc\n   __hrtimer_run_queues+0x154/0x210\n   hrtimer_interrupt+0x2c4/0x760\n   arch_timer_handler_phys+0x48/0x60\n   handle_percpu_devid_irq+0xe0/0x340\n   __handle_domain_irq+0xbc/0x130\n   gic_handle_irq+0x78/0x460\n   el1_irq+0xb8/0x140\n   __audit_inode_child+0x240/0x7bc\n   tracefs_create_file+0x1b8/0x2a0\n   trace_create_file+0x18/0x50\n   event_create_dir+0x204/0x30c\n   __trace_add_new_event+0xac/0x100\n   event_trace_add_tracer+0xa0/0x130\n   trace_array_create_dir+0x60/0x140\n   trace_array_create+0x1e0/0x370\n   instance_mkdir+0x90/0xd0\n   tracefs_syscall_mkdir+0x68/0xa0\n   vfs_mkdir+0x21c/0x34c\n   do_mkdirat+0x1b4/0x1d4\n   __arm64_sys_mkdirat+0x4c/0x60\n   el0_svc_common.constprop.0+0xa8/0x240\n   do_el0_svc+0x8c/0xc0\n   el0_svc+0x20/0x30\n   el0_sync_handler+0xb0/0xb4\n   el0_sync+0x160/0x180\n\nTherefore, we add cond_resched() to __audit_inode_child() to fix it.","modified":"2026-03-31T17:29:20.802714440Z","published":"2025-12-24T12:22:56.742Z","related":["SUSE-SU-2026:0263-1","SUSE-SU-2026:0278-1","SUSE-SU-2026:0281-1","SUSE-SU-2026:0293-1","SUSE-SU-2026:0315-1","SUSE-SU-2026:0316-1","SUSE-SU-2026:0317-1","SUSE-SU-2026:0411-1","SUSE-SU-2026:0617-1","SUSE-SU-2026:20477-1","SUSE-SU-2026:20498-1","SUSE-SU-2026:20845-1","SUSE-SU-2026:20876-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54045.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0152e7758cc4e9f8bfba8dbea4438d8e488d6c08"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8a40b491372966ba5426e138a53460985565d5a6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8e76b944a7b9bddef190ffe2e29c9ae342ab91ed"},{"type":"WEB","url":"https://git.kernel.org/stable/c/98ef243d5900d75a64539a2165745bffbb155d43"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9ca08adb75fb40a8f742c371927ee73f9dc753bf"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b59bc6e37237e37eadf50cd5de369e913f524463"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d061e2bfc20f2914656385816e0d20566213c54c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f6364fa751d7486502c777f124a14d4d543fc5eb"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54045.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54045"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5195d8e217a78697152d64fc09a16e063a022465"},{"fixed":"d061e2bfc20f2914656385816e0d20566213c54c"},{"fixed":"1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5d"},{"fixed":"f6364fa751d7486502c777f124a14d4d543fc5eb"},{"fixed":"98ef243d5900d75a64539a2165745bffbb155d43"},{"fixed":"0152e7758cc4e9f8bfba8dbea4438d8e488d6c08"},{"fixed":"9ca08adb75fb40a8f742c371927ee73f9dc753bf"},{"fixed":"8a40b491372966ba5426e138a53460985565d5a6"},{"fixed":"8e76b944a7b9bddef190ffe2e29c9ae342ab91ed"},{"fixed":"b59bc6e37237e37eadf50cd5de369e913f524463"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-54045.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.3.0"},{"fixed":"4.14.326"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.295"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.257"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.195"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.132"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.53"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.4.16"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.5.0"},{"fixed":"6.5.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-54045.json"}}],"schema_version":"1.7.5"}