CVE-2022-50130 staging: fbtft: core: set smem_len before fb_deferred_io_init call
A missing initialization in the fbtft driver causes a warning and prevents deferred IO initialization, potentially 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-2022-50130?
CVE-2022-50130 is a medium-severity vulnerability in Linux kernel, published on 18 Jun 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:
staging: fbtft: core: set smem_len before fb_deferred_io_init call
The fbtft_framebuffer_alloc() calls fb_deferred_io_init() before initializing info->fix.smem_len. It is set to zero by the framebuffer_alloc() function. It will trigger a WARN_ON() at the start of fb_deferred_io_init() and the function will not do anything.
Which versions are affected by CVE-2022-50130?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-50130?
Apply the vendor's patch.
Is CVE-2022-50130 being exploited?
There is no known exploitation of CVE-2022-50130 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-50130, GHSA-mv24-h669-xmhf, UBUNTU-CVE-2022-50130.