CVE-2026-53136: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size

highCVSS 7.1CVE-2026-53136

CSIRTS triage

Other

What: The vulnerability involves clamping the VBIOS HDMI retimer register count to the array size.
Who is affected: Deployments using the affected drm/amd/display component.
Urgency: Remediation is high urgency due to the potential for system instability.
Action: Apply the relevant patches to ensure proper clamping.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.1
Published: 2026-06-09
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-53136

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-531360.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-53136	coverage & exploitation status	NVD · CVE.org

Recent advisories for drm/amd/display

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

highCVE-2026-53329: drm/amd/display: Use krealloc_array() in dal_vector_reserve()msrc · 2026-07-02
unknownCVE-2026-53330: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix out-o…nvd · 2026-07-01
unknownCVE-2026-53329: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use kreal…nvd · 2026-07-01
unknownCVE-2026-53313: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Avoid NUL…nvd · 2026-06-26
unknownCVE-2026-53285: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Wrap DCN3…nvd · 2026-06-26
mediumCVE-2026-53135: drm/amd/display: Fix NULL deref and buffer over-read in SDP debugfsmsrc · 2026-06-09