What’s Vulnerable › Vulnerabilities

CVE-2026-68106: drm/amdgpu: fix division by zero with invalid uvd dimensions

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-10-19
• Weakness: CWE-369

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix division by zero with invalid uvd dimensions When width or height is less than 16, width_in_mb or height_in_mb becomes 0, leading to fs_in_mb being 0. This causes a division by zero when calculating num_dpb_buffer in H264 and H264 Perf decode paths. Add validation to reject frames with width < 16 or height < 16 before performing any calculations that depend on these values. V2: Format change - move up all vaiable definitions. V3: Use warn_once to avoid spam. (cherry picked from commit 3e41d26c70b0a459d041cc19482a226c4b7423cb)

Affected products

• Linux kernel: 4.2 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/004d0453cfef16f056cb7b8bc04f69f19cf9df32
• https://git.kernel.org/stable/c/00ee64910ecf748cc15b23bbcbea472c203ec1e8
• https://git.kernel.org/stable/c/0c01c811be47e6b146552dd59bfedbea8f09b8f4
• https://git.kernel.org/stable/c/52f9a588296432accf2982f7d258192a37562f4f
• https://git.kernel.org/stable/c/81c9b4921f62d1642b9d775524ae9240e521a5ed
• https://git.kernel.org/stable/c/a00946b5ab7c25da5685ca9c58f50ff6f43c0fdf
• https://git.kernel.org/stable/c/be725ab23aa45c11a5afef3e2a9f6d8c084ae5dc
• https://git.kernel.org/stable/c/ffb33d466a68cea3e8a3dbed04d79037a3cbabd1

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