Bug 2460691 (CVE-2026-31461)

Summary: CVE-2026-31461 kernel: drm/amd/display: Fix drm_edid leak in amdgpu_dm
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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OS: Linux   
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A flaw was found in the Linux kernel's `drm/amd/display` component, specifically within the `amdgpu_dm` module. When a display sink is connected, the `drm_edid` structure was overwritten without properly releasing the previously allocated memory. This oversight can lead to a memory leak when the system resumes, potentially impacting system stability and performance over time.
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Description OSIDB Bzimport 2026-04-22 15:05:44 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: Fix drm_edid leak in amdgpu_dm

[WHAT]
When a sink is connected, aconnector->drm_edid was overwritten without
freeing the previous allocation, causing a memory leak on resume.

[HOW]
Free the previous drm_edid before updating it.

(cherry picked from commit 52024a94e7111366141cfc5d888b2ef011f879e5)
Comment 1 Keith Grant 2026-04-22 17:51:13 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026042251-CVE-2026-31461-2b9c@gregkh/T