What is CVE-2023-54120?

CVE-2023-54120 is a unscored severity Linux kernel vulnerability, affecting Linux kernel versions from 2.6.12 onward and patched in 4.14.313, 4.19.281, 5.4.241 and others. CVE-2023-54120 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-54120?

CVE-2023-54120 has a CVSS score of pending NVD analysis out of 10, rated awaiting scoring severity.

Is there a patch available for CVE-2023-54120?

Yes, CVE-2023-54120 has been patched. Fixed versions include 4.14.313, 4.19.281, 5.4.241 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-54120 actively exploited?

CVE-2023-54120 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-54120

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Fix race condition in hidp_session_thread There is a potential race condition in hidp_session_thread that may lead to use-after-free. For instance, the timer is active while hidp_del_timer is called in hidp_session_thread(). After hidp_session_put, then 'session' will be freed, causing kernel panic when hidp_idle_timeout is running. The solution is to use del_timer_sync instead of del_timer. Here is the call trace: ? hidp_session_probe+0x780/0x780 call_timer_fn+0x2d/0x1e0 __run_timers.part.0+0x569/0x940 hidp_session_probe+0x780/0x780 call_timer_fn+0x1e0/0x1e0 ktime_get+0x5c/0xf0 lapic_next_deadline+0x2c/0x40 clockevents_program_event+0x205/0x320 run_timer_softirq+0xa9/0x1b0 __do_softirq+0x1b9/0x641 __irq_exit_rcu+0xdc/0x190 irq_exit_rcu+0xe/0x20 sysvec_apic_timer_interrupt+0xa1/0xc0

Package Linux Kernel

Published 2025-12-24

Last modified 2026-04-15

Patch available

Yes

Affected versions

Linux kernel versions 2.6.12 and later are affected. Fixed in 4.14.313, 4.19.281, 5.4.241, 5.10.178, 5.15.108, 6.1.25, 6.2.12, 6.3 and their respective stable series.

Affected from

≥ 2.6.12

Fixed in

✓ 4.14.313 4.14.x ✓ 4.19.281 4.19.x ✓ 5.4.241 5.4.x ✓ 5.10.178 5.10.x ✓ 5.15.108 5.15.x ✓ 6.1.25 6.1.x ✓ 6.2.12 6.2.x ✓ 6.3

References

The following references provide additional information about CVE-2023-54120 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/0efb276d5848a3accc37c6f41b85e442c4768169
Patch
Kernel patch commit
https://git.kernel.org/stable/c/152f47bd6b995e0e98c85672f6d19894bc287ef2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/248af9feca062a4ca9c3f2ccf67056c8a5eb817f
Patch

8 patch commits total View all on NVD

Frequently asked questions

What is CVE-2023-54120?

CVE-2023-54120 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 2.6.12 onward and has been patched in 4.14.313, 4.19.281, 5.4.241 and others. CVE-2023-54120 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
Is there a patch available for CVE-2023-54120?

Yes — CVE-2023-54120 has been patched. Fixed versions include 4.14.313, 4.19.281, 5.4.241 and others. If you are running Linux kernel 2.6.12 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-54120 actively exploited?

No — CVE-2023-54120 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.