CVE-2026-31767
Description
In the Linux kernel, the following vulnerability has been resolved: drm/i915/dsi: Don't do DSC horizontal timing adjustments in command mode Stop adjusting the horizontal timing values based on the compression ratio in command mode. Bspec seems to be telling us to do this only in video mode, and this is also how the Windows driver does things. This should also fix a div-by-zero on some machines because the adjusted htotal ends up being so small that we end up with line_time_us==0 when trying to determine the vtotal value in command mode. Note that this doesn't actually make the display on the Huawei Matebook E work, but at least the kernel no longer explodes when the driver loads. (cherry picked from commit 0b475e91ecc2313207196c6d7fd5c53e1a878525)
How to fix
- linux linux_kernel6.12.81, 6.18.22, 6.19.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.6 ≤ v < 6.12.81, 6.13 ≤ v < 6.18.22, 6.19 ≤ v < 6.19.12, 7.0 | 6.12.81, 6.18.22, 6.19.12 |
| microsoft azl3_kernel_6.6.138.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.150.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.157.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.139.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.141.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.143.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.144.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.145.2-1 | No range specified | — |
| microsoft azl3_kernel_6.6.152.1-1 | No range specified | — |
| microsoft azl3_kernel_6.6.159.1-1 | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.