CVE-2026-68106
Published: August 12, 2026Last modified: August 14, 2026
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)
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.177-r0) |
| 25 LTS | linux-lts | Fixed (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.43-r0) |
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