CVE-2026-74417 drm/radeon: fix integer overflow in radeon_align_pitch()
An integer overflow in the Radeon DRM driver can cause invalid buffer allocations, 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-2026-74417?
CVE-2026-74417 is a high-severity vulnerability in Linux, published on 15 Aug 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/radeon: fix integer overflow in radeon_align_pitch()
radeon_align_pitch() has the same kind of overflow issue as the old amdgpu helper: both the alignment round-up add and the final 'aligned * cpp' calculation can overflow signed int.
If that wraps, radeon_mode_dumb_create() can end up returning an invalid pitch or creating a zero-sized dumb buffer.
Fix this by using check_add_overflow() for the alignment round-up and check_mul_overflow() for the final pitch calculation, returning 0 on overflow. Also reject zero pitch and size in radeon_mode_dumb_create().
Found via AST-based call-graph analysis using sqry.
Which versions are affected by CVE-2026-74417?
How do I fix CVE-2026-74417?
Apply the vendor's patch.
Is CVE-2026-74417 being exploited?
There is no known exploitation of CVE-2026-74417 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-74417, DEBIAN-CVE-2026-74417, GHSA-h36j-68r7-9j5g, UBUNTU-CVE-2026-74417.