Bug 2513361 (CVE-2026-68108) - CVE-2026-68108 kernel: drm/amdgpu/vce: fix integer overflow in image size
Summary: CVE-2026-68108 kernel: drm/amdgpu/vce: fix integer overflow in image size
Keywords:
Status: NEW
Alias: CVE-2026-68108
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-10 12:33 UTC by OSIDB Bzimport
Modified: 2026-08-26 12:27 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-08-10 12:33:07 UTC
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu/vce: fix integer overflow in image size

Fix a security vulnerability where malicious VCE command streams
with oversized dimensions (e.g. 65536×65536) cause 32-bit integer
overflow, wrapping the calculated buffer size to 0. This bypasses
validation and allows GPU firmware to perform out-of-bound memory
access.

The fix uses 64-bit arithmetic to detect overflow and rejects
invalid dimensions before they reach the hardware.

V2: remove redundant check
V3: modify max height value
V4: remove size64

(cherry picked from commit cbe408dba581755ad1279a487ec786d8927d778d)


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