CVE-2026-68235: drm/amd/display: dce100: skip non-DP stream encoders for DP MST

mediumCVSS 4.3CVE-2026-68235

CSIRTS triage

vendor: Linux product: Linux KernelOther

What: The amd/display dce100 driver improperly handles non-DP stream encoders for DP MST configurations.
Who is affected: Systems running affected versions of the Linux kernel with AMD display dce100 driver.
Urgency: Medium severity (CVSS 4.3); impacts display output reliability in multi-stream transport scenarios.
Action: Apply Linux kernel patch for amd/display dce100 or update to a patched kernel version.

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: medium — CVSS 4.3
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68235

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-2026-682350.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68235	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownCVE-2026-68235: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: dce100: s…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.

unknownCVE-2026-74732: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check for…nvd · 2026-08-22
highCVE-2026-74449: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix divid…nvd · 2026-08-15
unknownCVE-2026-68436: In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: use kvzal…nvd · 2026-08-12
mediumCVE-2026-74732: drm/amd/display: Check for tg ops in dce110_set_avmutemsrc · 2026-08-11
mediumCVE-2026-68436: drm/amd/display: use kvzalloc to allocate struct dcmsrc · 2026-08-11
lowCVE-2026-68256: drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink referenc…msrc · 2026-08-11