CVE-2026-74417
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In the Linux kernel, the drm/radeon driver's radeon_align_pitch() had a signed integer overflow during alignment round-up and the 'aligned * cpp' calculation. This could lead to returning an invalid pitch or creating a zero-sized dumb buffer.
Risk Assessment
The overflow could cause improper behavior of the graphics driver, potentially leading to system crashes or incorrect memory allocation, which might be exploited for privilege escalation or DoS.
Recommendation
Install the kernel patch that uses check_add_overflow() and check_mul_overflow() and rejects zero pitch and size.
Original NVD description (English source)
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.