drm/amd/display: set new_stream to NULL after release (CVE-2026-68236) | HOL Guard CVE

High · CVSS 7.8CVE-2026-68236

drm/amd/display: set new_stream to NULL after release

Answer in brief

CVE-2026-68236 records a High severity (CVSS 7.8) vulnerability in drm/amd/display: set new_stream to NULL after release. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 10, 2026Updated Aug 17, 2026Source checked Sep 24, 2026First seen by HOL Aug 10, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76 \|\| >=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <5182e442e61397d446c36995b8f5676942d35b82 \|\| >=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <679f23f0a3606afcef1ffabd72222f00a54ad9e3 \|\| >=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <0676fecbb5242aa22c057e78326d6d6041db034c \|\| >=9b690ef3c70422cdcd0cf912db33f2c92ef4a53f <9fa26b9eed6195bf840f39ac183b9a6237548755	ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76, 5182e442e61397d446c36995b8f5676942d35b82, 679f23f0a3606afcef1ffabd72222f00a54ad9e3, 0676fecbb5242aa22c057e78326d6d6041db034c, 9fa26b9eed6195bf840f39ac183b9a6237548755
Linux/Linuxgeneric	4.15	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to ba8bf1dcbb44773e7a0fd13b42925c644e0d5e76 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 10, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: set new_stream to NULL after release In dm_update_crtc_state(), the skip_modeset path releases new_stream via dc_stream_release() but does not set the pointer to NULL. If a later error (e.g., color management failure) triggers the fail label, the error path calls dc_stream_release() again on the same dangling pointer, causing a double release and potential use-after-free. Fix this by setting new_stream to NULL after the initial release. (cherry picked from commit 99f3af19073b3ddbfd96e789124cce12c4277b28)

Quoted source text, attributed separately from HOL analysis.