CVE-2022-50292 drm/msm/dp: fix bridge lifetime
A resource leak in the Linux kernel's DisplayPort driver can cause denial of service by preventing device binding retries.
- 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-2022-50292?
CVE-2022-50292 is a medium-severity denial of service vulnerability in Linux kernel, published on 15 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 bridge 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 bridges, previously allocated bridges will leak on probe deferral.
Fix this by amending the DP parser interface and tying the lifetime of the bridge device to the DRM device rather than DP platform device.
Patchwork: https://patchwork.freedesktop.org/patch/502667/
Which versions are affected by CVE-2022-50292?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50292?
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-2022-50292 being exploited?
There is no known exploitation of CVE-2022-50292 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50292, GHSA-g9p7-6qmh-h5c3, UBUNTU-CVE-2022-50292.