CVE-2022-49528 media: i2c: dw9714: Disable the regulator when the driver fails to probe
A missing regulator disable in the dw9714 driver error path causes a kernel warning and potential instability when probing fails.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-49528?
CVE-2022-49528 is a medium-severity denial of service vulnerability in Linux kernel, published on 26 Feb 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:
media: i2c: dw9714: Disable the regulator when the driver fails to probe
When the driver fails to probe, we will get the following splat:
[ 59.305988] ------------[ cut here ]------------ [ 59.306417] WARNING: CPU: 2 PID: 395 at drivers/regulator/core.c:2257 _regulator_put+0x3ec/0x4e0 [ 59.310345] RIP: 0010:_regulator_put+0x3ec/0x4e0 [ 59.318362] Call Trace: [ 59.318582] <TASK> [ 59.318765] regulator_put+0x1f/0x30 [ 59.319058] devres_release_group+0x319/0x3d0 [ 59.319420] i2c_device_probe+0x766/0x940
Fix this by disabling the regulator in error handling.
Which versions are affected by CVE-2022-49528?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49528?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-49528 being exploited?
There is no known exploitation of CVE-2022-49528 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49528, GHSA-3f5c-xpwv-8wgm, ROOT-OS-DEBIAN-11-CVE-2022-49528, ROOT-OS-UBUNTU-2204-CVE-2022-49528, UBUNTU-CVE-2022-49528.