High 8.8Published Dec 24, 2025

CVE-2023-54120Bluetooth: Fix race condition in hidp_session_thread

Updated under an hour ago (Oct 28, 2026, 8:23 AM ET)

Does this affect you?

It affects Linux. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Linux

Exploited in the last 30 days

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

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 152f47bd6b995e0e98c85672f6d19894bc287ef2; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 5f3d214d19899183d4e0cce7552998262112e4ab; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8a99e6200c38b78a45dcd12a6bdc43fdf4dc36be; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f7ec5ca433ceead8d9d78fd2febff094f289441d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 builds before 0efb276d5848a3accc37c6f41b85e442c4768169; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before f6719fd8f409fa1da8dc956e93822d25e1e8b360; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 248af9feca062a4ca9c3f2ccf67056c8a5eb817f; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c95930abd687fcd1aa040dc4fe90dff947916460	CNA record

References

References

https://git.kernel.org/stable/c/152f47bd6b995e0e98c85672f6d19894bc287ef2
https://git.kernel.org/stable/c/5f3d214d19899183d4e0cce7552998262112e4ab
https://git.kernel.org/stable/c/8a99e6200c38b78a45dcd12a6bdc43fdf4dc36be
https://git.kernel.org/stable/c/f7ec5ca433ceead8d9d78fd2febff094f289441d
https://git.kernel.org/stable/c/0efb276d5848a3accc37c6f41b85e442c4768169
https://git.kernel.org/stable/c/f6719fd8f409fa1da8dc956e93822d25e1e8b360
https://git.kernel.org/stable/c/248af9feca062a4ca9c3f2ccf67056c8a5eb817f
https://git.kernel.org/stable/c/c95930abd687fcd1aa040dc4fe90dff947916460

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.