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CVE-2023-54045· NVD / CVE Program· CNA Linux

audit: fix possible soft lockup in __audit_inode_child()

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.28% (FIRST EPSS).
  • Fixed version: Linux Linux 0152e7758cc4e9f8bfba8dbea4438d8e488d6c08, 1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5d, 8a40b491372966ba5426e138a53460985565d5a6.

Low priority for now. Upgrade to Linux Linux 0152e7758cc4e9f8bfba8dbea4438d8e488d6c08, 1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5d, 8a40b491372966ba5426e138a53460985565d5a6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

—No exploit Fix available
Published
Dec 24, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 19th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 3.3affected
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before d061e2bfc20f2914656385816e0d20566213c54caffected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before 1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5daffected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before f6364fa751d7486502c777f124a14d4d543fc5ebaffected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before 98ef243d5900d75a64539a2165745bffbb155d43affected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before 0152e7758cc4e9f8bfba8dbea4438d8e488d6c08affected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before 9ca08adb75fb40a8f742c371927ee73f9dc753bfaffected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before 8a40b491372966ba5426e138a53460985565d5a6affected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before 8e76b944a7b9bddef190ffe2e29c9ae342ab91edaffected · git
    • 5195d8e217a78697152d64fc09a16e063a022465 and later · before b59bc6e37237e37eadf50cd5de369e913f524463affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.55-16.1.55-1
Debian:13linuxbefore 6.5.3-16.5.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-50783Dec 24, 2025 · mptcp: use proper req destructor for IPv6
    0Monitor
  • ← EarlierCVE-2023-54044Dec 24, 2025 · spmi: Add a check for remove callback when removing a SPMI driver
    0Monitor
  • Later →CVE-2023-54047Dec 24, 2025 · drm/rockchip: dw_hdmi: cleanup drm encoder during unbind
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux0152e7758cc4e9f8bfba8dbea4438d8e488d6c08Vendor (CNA)
Linux Linux1640c7bd4eddec6c72f3a99cbb74e333a2ce9f5dVendor (CNA)
Linux Linux8a40b491372966ba5426e138a53460985565d5a6Vendor (CNA)
Linux Linux8e76b944a7b9bddef190ffe2e29c9ae342ab91edVendor (CNA)
Linux Linux98ef243d5900d75a64539a2165745bffbb155d43Vendor (CNA)
Linux Linux9ca08adb75fb40a8f742c371927ee73f9dc753bfVendor (CNA)
Linux Linuxb59bc6e37237e37eadf50cd5de369e913f524463Vendor (CNA)
Linux Linuxd061e2bfc20f2914656385816e0d20566213c54cVendor (CNA)
Linux Linuxf6364fa751d7486502c777f124a14d4d543fc5ebVendor (CNA)
debian:linux6.1.55-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

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No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

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References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records