CVE-2024-38549 drm/mediatek: Add 0 size check to mtk_drm_gem_obj
A local attacker can cause a kernel panic by requesting a zero-size GEM buffer in the MediaTek DRM driver, 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-2024-38549?
CVE-2024-38549 is a medium-severity vulnerability in Linux kernel, published on 19 Jun 2024. 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/mediatek: Add 0 size check to mtk_drm_gem_obj
Add a check to mtk_drm_gem_init if we attempt to allocate a GEM object of 0 bytes. Currently, no such check exists and the kernel will panic if a userspace application attempts to allocate a 0x0 GBM buffer.
Tested by attempting to allocate a 0x0 GBM buffer on an MT8188 and verifying that we now return EINVAL.
Which versions are affected by CVE-2024-38549?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-38549?
Apply the vendor's patch.
Is CVE-2024-38549 being exploited?
There is no known exploitation of CVE-2024-38549 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-38549, DEBIAN-CVE-2024-38549, GHSA-qwxv-c47r-2c92, UBUNTU-CVE-2024-38549.