CVE-2023-54120
published 2025-12-24CVE-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…
PriorityP345high8.8CVSS 3.1
AVAACLPRNUINSUCHIHAH
EPSS
0.31%
24.0th percentile
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
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.25-1 (bookworm) | linux 6.1.25-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 152f47bd6b995e0e98c85672f6d19894bc287ef2 | 152f47bd6b995e0e98c85672f6d19894bc287ef2 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5f3d214d19899183d4e0cce7552998262112e4ab | 5f3d214d19899183d4e0cce7552998262112e4ab |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8a99e6200c38b78a45dcd12a6bdc43fdf4dc36be | 8a99e6200c38b78a45dcd12a6bdc43fdf4dc36be |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f7ec5ca433ceead8d9d78fd2febff094f289441d | f7ec5ca433ceead8d9d78fd2febff094f289441d |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0efb276d5848a3accc37c6f41b85e442c4768169 | 0efb276d5848a3accc37c6f41b85e442c4768169 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < f6719fd8f409fa1da8dc956e93822d25e1e8b360 | f6719fd8f409fa1da8dc956e93822d25e1e8b360 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 248af9feca062a4ca9c3f2ccf67056c8a5eb817f | 248af9feca062a4ca9c3f2ccf67056c8a5eb817f |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c95930abd687fcd1aa040dc4fe90dff947916460 | c95930abd687fcd1aa040dc4fe90dff947916460 |
| linux | linux_kernel | >= 0 < 5.10.178-1 | 5.10.178-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 0 < 6.1.25-1 | 6.1.25-1 |
| linux | linux_kernel | >= 2.6.12 < 4.14.313 | 4.14.313 |
| linux | linux_kernel | >= 4.15.0 < 4.19.281 | 4.19.281 |
| linux | linux_kernel | >= 4.20.0 < 5.4.241 | 5.4.241 |
| linux | linux_kernel | >= 5.11.0 < 5.15.108 | 5.15.108 |
| linux | linux_kernel | >= 5.16.0 < 6.1.25 | 6.1.25 |
| linux | linux_kernel | >= 5.5.0 < 5.10.178 | 5.10.178 |
| linux | linux_kernel | >= 6.2.0 < 6.2.12 | 6.2.12 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_redhat5.8MEDIUM
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OSV
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 con
osv·2025-12-24
CVE-2023-54120 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 con
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_rc
OSV
Bluetooth: Fix race condition in hidp_session_thread
osv·2025-12-24
CVE-2023-54120 Bluetooth: Fix race condition in hidp_session_thread
Bluetooth: Fix race condition in hidp_session_thread
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_time
GHSA
GHSA-732j-jg49-j2pr: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix race condition in hidp_session_thread
There is a potential race c
ghsa_unreviewed·2025-12-24
CVE-2023-54120 GHSA-732j-jg49-j2pr: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix race condition in hidp_session_thread
There is a potential race c
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_ex
Red Hat
kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread
vendor_redhat·2025-12-24·CVSS 5.8
CVE-2023-54120 [MEDIUM] CWE-416 kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread
kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread
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_
Debian
CVE-2023-54120: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
vendor_debian·2023
CVE-2023-54120 CVE-2023-54120: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
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_rc
No detection rules found.
No public exploits indexed.
Wiz
CVE-2023-54120 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz
CVE-2023-54120 CVE-2023-54120 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2023-54120 :
Linux Kernel vulnerability analysis and mitigation
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+0
Bugzilla
CVE-2023-54120 kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread
bugzilla·2025-12-24
CVE-2023-54120 [MEDIUM] CVE-2023-54120 kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread
CVE-2023-54120 kernel: Linux kernel Bluetooth: Denial of Service via race condition in hidp_session_thread
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+0x
https://git.kernel.org/stable/c/0efb276d5848a3accc37c6f41b85e442c4768169https://git.kernel.org/stable/c/152f47bd6b995e0e98c85672f6d19894bc287ef2https://git.kernel.org/stable/c/248af9feca062a4ca9c3f2ccf67056c8a5eb817fhttps://git.kernel.org/stable/c/5f3d214d19899183d4e0cce7552998262112e4abhttps://git.kernel.org/stable/c/8a99e6200c38b78a45dcd12a6bdc43fdf4dc36behttps://git.kernel.org/stable/c/c95930abd687fcd1aa040dc4fe90dff947916460https://git.kernel.org/stable/c/f6719fd8f409fa1da8dc956e93822d25e1e8b360https://git.kernel.org/stable/c/f7ec5ca433ceead8d9d78fd2febff094f289441d
2025-12-24
Published