CVE-2022-50634 power: supply: cw2015: Fix potential null-ptr-deref in cw_bat_probe()
A null pointer dereference in the Linux kernel cw2015 battery driver can cause a system crash, requiring a kernel patch.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-50634?
CVE-2022-50634 is a vulnerability in Linux, published on 9 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
power: supply: cw2015: Fix potential null-ptr-deref in cw_bat_probe()
cw_bat_probe() calls create_singlethread_workqueue() and not checked the ret value, which may return NULL. And a null-ptr-deref may happen:
cw_bat_probe() create_singlethread_workqueue() # failed, cw_bat->wq is NULL queue_delayed_work() queue_delayed_work_on() __queue_delayed_work() # warning here, but continue __queue_work() # access wq->flags, null-ptr-deref
Check the ret value and return -ENOMEM if it is NULL.
Which versions are affected by CVE-2022-50634?
How do I fix CVE-2022-50634?
Apply the vendor's patch.
Is CVE-2022-50634 being exploited?
There is no known exploitation of CVE-2022-50634 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2022-50634, GHSA-r4h8-r7w5-jf6v, ROOT-OS-DEBIAN-11-CVE-2022-50634, ROOT-OS-UBUNTU-2204-CVE-2022-50634, UBUNTU-CVE-2022-50634.