CVE-2026-31767

MEDIUM

MEDIUM Priority: 0.01 BB Relevance: 36/100

Published: 2026-05-01 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Low Complexity No Interaction

CVSS Vector Breakdown

AV: Local

AC: Low

PR: Low

UI: None

S: Unchanged

C: None

I: None

A: High

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)

Weakness Classification (1)

CWE-369

Affected Software (14)

Vendor	Product	Version
Linux	Linux	53693f02d80e0a909e76c2a25f8aac8515f959db < 80cc84bdc49addaee6b6e4f735f574ab5a424c42
Linux	Linux	53693f02d80e0a909e76c2a25f8aac8515f959db < 481f7a463ae4bea9503ae7fa1481ad75dc872af4
Linux	Linux	53693f02d80e0a909e76c2a25f8aac8515f959db < 55efe8402f46af8399c8b634a18b130a05fd7820
Linux	Linux	53693f02d80e0a909e76c2a25f8aac8515f959db < 86e926b108880c0109b8635e459450447156aeb7
Linux	Linux	53693f02d80e0a909e76c2a25f8aac8515f959db < 33b5336e4fd8ba0e40a12989cadb3f5534a0f9e4
Linux	Linux	53693f02d80e0a909e76c2a25f8aac8515f959db < 4dfce79e098915d8e5fc2b9e1d980bc3251dd32c
Linux	Linux	5.6
linux	linux_kernel	5.6 – 6.12.81
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0