drm/radeon: fix integer overflow in radeon_align_pitch() (CVE-2026-74417) | HOL Guard CVE

High · CVSS 7.8CVE-2026-74417

drm/radeon: fix integer overflow in radeon_align_pitch()

Answer in brief

CVE-2026-74417 records a High severity (CVSS 7.8) vulnerability in drm/radeon: fix integer overflow in radeon_align_pitch(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 15, 2026Updated Aug 17, 2026Source checked Sep 29, 2026First seen by HOL Aug 15, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=ff72145badb834e8051719ea66e024784d000cb4 <b7b44937c548c2c987fcdd129f8896741004bed6 \|\| >=ff72145badb834e8051719ea66e024784d000cb4 <415bb9893e249e46aa5159f7363a11512cf06fa9 \|\| >=ff72145badb834e8051719ea66e024784d000cb4 <d9dfa176899d488e48bb7342d2c43ddd36e66318 \|\| >=ff72145badb834e8051719ea66e024784d000cb4 <dfc7b5b5599472277e71e5bd2712740651c7c5be \|\| >=ff72145badb834e8051719ea66e024784d000cb4 <ce3b24eb3ee8f82de851535f516bf21f83e82259	b7b44937c548c2c987fcdd129f8896741004bed6, 415bb9893e249e46aa5159f7363a11512cf06fa9, d9dfa176899d488e48bb7342d2c43ddd36e66318, dfc7b5b5599472277e71e5bd2712740651c7c5be, ce3b24eb3ee8f82de851535f516bf21f83e82259
Linux/Linuxgeneric	2.6.39	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to b7b44937c548c2c987fcdd129f8896741004bed6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 15, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.