CVE-2026-64219: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async

highCVSS 7.1CVE-2026-64219

CSIRTS triage

product: drm/amd/displayOther

What: There is a vulnerability related to validating payload length and link_index in dc_process_dmub_aux_transfer_async.
Who is affected: Deployments using drm/amd/display are affected.
Urgency: Remediation urgency is unknown due to lack of severity information and exploitation status.
Action: Monitor for updates regarding this vulnerability.

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

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: high — CVSS 7.1
Published: 2026-07-14
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64219

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-2026-642190.14% 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-2026-64219	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

highUSN-8620-4: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
medium[NEW] [medium] Linux Kernel: Multiple vulnerabilitiescert-bund
highUSN-8620-3: Linux kernel (Intel IoTG) vulnerabilitiesubuntu
highUSN-8620-2: Linux kernel (Azure FIPS) vulnerabilitiesubuntu
highUSN-8620-1: Linux kernel vulnerabilitiesubuntu
highUSN-8618-1: Linux kernel vulnerabilitiesubuntu
highCVE-2026-64219: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate …nvd

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-2026-64219: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate …nvd · 2026-07-24
highCVE-2026-64097: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Validate …nvd · 2026-07-19
mediumCVE-2026-64097: drm/amd/display: Validate GPIO pin LUT table size before iteratingmsrc · 2026-07-14
highCVE-2026-53329: drm/amd/display: Use krealloc_array() in dal_vector_reserve()msrc · 2026-07-14
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