Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-68236

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
10/08/2026
Last modified:
17/08/2026

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

References to Advisories, Solutions, and Tools