Skip to main content

Boteraser | Website and Server Security Solutions

🛡️ CVE-2022-50833 — kernel

⚪ Unknown ✅ No Known Exploit NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Bluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works

syzbot is reporting attempt to schedule hdev->cmd_work work from system_wq

WQ into hdev->workqueue WQ which is under draining operation [1], for

commit c8efcc2589464ac7 ("workqueue: allow chained queueing during

destruction") does not allow such operation.

The check introduced by commit 877afadad2dce8aa ("Bluetooth: When HCI work

queue is drained, only queue chained work") was incomplete.

Use hdev->workqueue WQ when queuing hdev->{cmd,ncmd}_timer works because

hci_{cmd,ncmd}_timeout() calls queue_work(hdev->workqueue). Also, protect

the queuing operation with RCU read lock in order to avoid calling

queue_delayed_work() after cancel_delayed_work() completed.

Affected software

CVE-2022-50833 is recorded against 2 packages.

  • kernel (from 5.20.0 up to 6.0.1)
  • unknown

Timeline and source

Published on 30 December 2025 and last revised on 12 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

Other advisories for this package

kernel has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2022-50833 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-12-30
Updated 2026-08-20
Modified 2026-08-12
Fix URL N/A

Affected Packages

Software From version Fixed in
kernel 5.20.0 6.0.1
unknown — —

Similar Threats

Free Vulnerability Check

Is your site affected by CVE-2022-50833?

BotEraser helps you identify potentially vulnerable plugins and themes by checking your installation against CVE-2022-50833 and other known CVE records.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

Browse related advisories

All advisoriesCVECVE 2022
✓