CVE-2026-31488 remediation guide

Linux Linux, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.8 Telecommunications Update Service

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Do not skip unrelated mode changes in DSC validation Starting with commit 17ce8a6907f7 ("drm/amd/display: Add dsc pre-validation in atomic check"), amdgpu resets the CRTC state mode_changed flag to false when recomputing the DSC configuration results in no timing change for a particular stream. However, this is incorrect in scenarios where a change in MST/DSC configuration happens in the same KMS commit as another (unrelated) mode change. For example, the integrated panel of a laptop may be configured diffe...

Open CVE record

ProductLinux Linux, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Affected versions>= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < da1d0ed31e9802fd99384f43cc63678a5a11cb41, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 21159d8b335a6b9f44cbb506733013a902ae2da4, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 10862e344b4d6434642a48c87d765813fc0b0ba7, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 8a5edc97fd9c6415ff2eff872748439a97e3c3d8, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 111208b5b7ebcdadb3f922cc52d8425f0fa91b33, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < aed3d041ab061ec8a64f50a3edda0f4db7280025, >= 5.18, >= 5.18.1 < 6.12.80, >= 6.13 < 6.18.21, >= 6.19 < 6.19.11, 5.18, 7.0

Fixed versions6.12.80, 6.18.21, 6.19.11

Priority basisReview · CVSS 7.8 · EPSS 0.14%

Identify the affected asset

Confirm whether Linux Linux, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.8 Telecommunications Update Service is installed, record the deployed version and installation path, and identify exposed interfaces.

Record the product name, package or appliance identifier, and installed version.
Identify internet-facing, administrative, API, and internal access paths.
Preserve the pre-change configuration and relevant service logs.

Validate the affected-version match

Compare the deployed version with the affected range: >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < da1d0ed31e9802fd99384f43cc63678a5a11cb41, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 21159d8b335a6b9f44cbb506733013a902ae2da4, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 10862e344b4d6434642a48c87d765813fc0b0ba7, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 8a5edc97fd9c6415ff2eff872748439a97e3c3d8, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < 111208b5b7ebcdadb3f922cc52d8425f0fa91b33, >= 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b < aed3d041ab061ec8a64f50a3edda0f4db7280025, >= 5.18, >= 5.18.1 < 6.12.80, >= 6.13 < 6.18.21, >= 6.19 < 6.19.11, 5.18, 7.0. Treat incomplete inventory results as unresolved.

Prioritize with independent signals

The CVSS severity warrants an early asset and exposure review. Combine this signal with asset criticality, exposure, compensating controls, and business impact.

Apply supported remediation

Follow the vendor advisory or supported update path. Current fixed-version status: 6.12.80, 6.18.21, 6.19.11. Preserve configuration and rollback material before change.

Verify the result

Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.

Confirm the expected version and package state.
Run a functional health check for critical service paths.
Review authentication, error, application, and security monitoring logs.
Reassess exposure if the supported fix cannot be applied.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.