CVE-2026-53068 drm/komeda: fix integer overflow in AFBC framebuffer size check
An integer overflow in the Linux kernel's Komeda DRM driver allows local attackers to trigger out-of-bounds memory access, potentially leading to code execution or privilege escalation.
- 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-2026-53068?
CVE-2026-53068 is a high-severity vulnerability in Linux kernel, published on 24 Jun 2026. 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/komeda: fix integer overflow in AFBC framebuffer size check
The AFBC framebuffer size validation calculates the minimum required buffer size by adding the AFBC payload size to the framebuffer offset. This addition is performed without checking for integer overflow.
If the addition oveflows, the size check may incorrectly succed and allow userspace to provide an undersized drm_gem_object, potentially leading to out-of-bounds memory access.
Add usage of check_add_overflow() to safely compute the minimum required size and reject the framebuffer if an overflow is detected. This makes the AFBC size validation more robust against malformed.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Weakness: CWE-190
Which versions are affected by CVE-2026-53068?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-53068?
Apply the vendor's patch.
Is CVE-2026-53068 being exploited?
There is no known exploitation of CVE-2026-53068 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-53068, DEBIAN-CVE-2026-53068, GHSA-5pf3-f93j-64w2, ROOT-OS-DEBIAN-11-CVE-2026-53068, ROOT-OS-DEBIAN-12-CVE-2026-53068, ROOT-OS-UBUNTU-2204-CVE-2026-53068 and 2 more.