CVE-2022-50360 drm/msm/dp: fix aux-bus EP lifetime
A resource leak in the Linux kernel DP aux-bus driver can cause device binding failures, leading to denial of service.
- 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-2022-50360?
CVE-2022-50360 is a medium-severity denial of service vulnerability in Linux kernel, published on 17 Sep 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:
drm/msm/dp: fix aux-bus EP lifetime
Device-managed resources allocated post component bind must be tied to the lifetime of the aggregate DRM device or they will not necessarily be released when binding of the aggregate device is deferred.
This can lead resource leaks or failure to bind the aggregate device when binding is later retried and a second attempt to allocate the resources is made.
For the DP aux-bus, an attempt to populate the bus a second time will simply fail ("DP AUX EP device already populated").
Fix this by tying the lifetime of the EP device to the DRM device rather than DP controller platform device.
Patchwork: https://patchwork.freedesktop.org/patch/502672/
Which versions are affected by CVE-2022-50360?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50360?
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-2022-50360 being exploited?
There is no known exploitation of CVE-2022-50360 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50360, GHSA-v2c6-2mh9-m823, UBUNTU-CVE-2022-50360.