CVE-2023-54045 (GCVE-0-2023-54045)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:22 – Updated: 2026-05-11 19:54
VLAI
Title
audit: fix possible soft lockup in __audit_inode_child()
Summary
In the Linux kernel, the following vulnerability has been resolved: audit: fix possible soft lockup in __audit_inode_child() Tracefs or debugfs maybe cause hundreds to thousands of PATH records, too many PATH records maybe cause soft lockup. For example: 1. CONFIG_KASAN=y && CONFIG_PREEMPTION=n 2. auditctl -a exit,always -S open -k key 3. sysctl -w kernel.watchdog_thresh=5 4. mkdir /sys/kernel/debug/tracing/instances/test There may be a soft lockup as follows: watchdog: BUG: soft lockup - CPU#45 stuck for 7s! [mkdir:15498] Kernel panic - not syncing: softlockup: hung tasks Call trace: dump_backtrace+0x0/0x30c show_stack+0x20/0x30 dump_stack+0x11c/0x174 panic+0x27c/0x494 watchdog_timer_fn+0x2bc/0x390 __run_hrtimer+0x148/0x4fc __hrtimer_run_queues+0x154/0x210 hrtimer_interrupt+0x2c4/0x760 arch_timer_handler_phys+0x48/0x60 handle_percpu_devid_irq+0xe0/0x340 __handle_domain_irq+0xbc/0x130 gic_handle_irq+0x78/0x460 el1_irq+0xb8/0x140 __audit_inode_child+0x240/0x7bc tracefs_create_file+0x1b8/0x2a0 trace_create_file+0x18/0x50 event_create_dir+0x204/0x30c __trace_add_new_event+0xac/0x100 event_trace_add_tracer+0xa0/0x130 trace_array_create_dir+0x60/0x140 trace_array_create+0x1e0/0x370 instance_mkdir+0x90/0xd0 tracefs_syscall_mkdir+0x68/0xa0 vfs_mkdir+0x21c/0x34c do_mkdirat+0x1b4/0x1d4 __arm64_sys_mkdirat+0x4c/0x60 el0_svc_common.constprop.0+0xa8/0x240 do_el0_svc+0x8c/0xc0 el0_svc+0x20/0x30 el0_sync_handler+0xb0/0xb4 el0_sync+0x160/0x180 Therefore, we add cond_resched() to __audit_inode_child() to fix it.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < d061e2bfc20f2914656385816e0d20566213c54c (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < 1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5d (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < f6364fa751d7486502c777f124a14d4d543fc5eb (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < 98ef243d5900d75a64539a2165745bffbb155d43 (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < 0152e7758cc4e9f8bfba8dbea4438d8e488d6c08 (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < 9ca08adb75fb40a8f742c371927ee73f9dc753bf (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < 8a40b491372966ba5426e138a53460985565d5a6 (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < 8e76b944a7b9bddef190ffe2e29c9ae342ab91ed (git)
Affected: 5195d8e217a78697152d64fc09a16e063a022465 , < b59bc6e37237e37eadf50cd5de369e913f524463 (git)
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Linux Linux Affected: 3.3
Unaffected: 0 , < 3.3 (semver)
Unaffected: 4.14.326 , ≤ 4.14.* (semver)
Unaffected: 4.19.295 , ≤ 4.19.* (semver)
Unaffected: 5.4.257 , ≤ 5.4.* (semver)
Unaffected: 5.10.195 , ≤ 5.10.* (semver)
Unaffected: 5.15.132 , ≤ 5.15.* (semver)
Unaffected: 6.1.53 , ≤ 6.1.* (semver)
Unaffected: 6.4.16 , ≤ 6.4.* (semver)
Unaffected: 6.5.3 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
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        {
          "lang": "en",
          "value": "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 \u0026\u0026 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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:54:27.312Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/d061e2bfc20f2914656385816e0d20566213c54c"
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          "url": "https://git.kernel.org/stable/c/8e76b944a7b9bddef190ffe2e29c9ae342ab91ed"
        },
        {
          "url": "https://git.kernel.org/stable/c/b59bc6e37237e37eadf50cd5de369e913f524463"
        }
      ],
      "title": "audit: fix possible soft lockup in __audit_inode_child()",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54045",
    "datePublished": "2025-12-24T12:22:56.742Z",
    "dateReserved": "2025-12-24T10:53:46.182Z",
    "dateUpdated": "2026-05-11T19:54:27.312Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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      "cve": "CVE-2023-54045",
      "date": "2026-06-28",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54045\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:06.147\",\"lastModified\":\"2026-06-17T06:46:42.303\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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 \u0026\u0026 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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"kernel/auditsc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"d061e2bfc20f2914656385816e0d20566213c54c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"f6364fa751d7486502c777f124a14d4d543fc5eb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"98ef243d5900d75a64539a2165745bffbb155d43\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"0152e7758cc4e9f8bfba8dbea4438d8e488d6c08\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"9ca08adb75fb40a8f742c371927ee73f9dc753bf\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"8a40b491372966ba5426e138a53460985565d5a6\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"8e76b944a7b9bddef190ffe2e29c9ae342ab91ed\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5195d8e217a78697152d64fc09a16e063a022465\",\"lessThan\":\"b59bc6e37237e37eadf50cd5de369e913f524463\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"kernel/auditsc.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.3\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.3\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.14.326\",\"lessThanOrEqual\":\"4.14.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"4.19.295\",\"lessThanOrEqual\":\"4.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.4.257\",\"lessThanOrEqual\":\"5.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.195\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.132\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.53\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.4.16\",\"lessThanOrEqual\":\"6.4.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.5.3\",\"lessThanOrEqual\":\"6.5.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0152e7758cc4e9f8bfba8dbea4438d8e488d6c08\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8a40b491372966ba5426e138a53460985565d5a6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8e76b944a7b9bddef190ffe2e29c9ae342ab91ed\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/98ef243d5900d75a64539a2165745bffbb155d43\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9ca08adb75fb40a8f742c371927ee73f9dc753bf\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b59bc6e37237e37eadf50cd5de369e913f524463\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d061e2bfc20f2914656385816e0d20566213c54c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f6364fa751d7486502c777f124a14d4d543fc5eb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.