CVE-2026-68277: drm/dp/mst: fix OOB reads on 2-byte fields in sideband reply parsers
CSIRTS triage
- What
- The DRM DP MST sideband reply parsers perform out-of-bounds reads on 2-byte fields.
- Who is affected
- Linux systems with DRM display controllers using DP MST.
- Urgency
- Low priority; CVSS 3.3 and limited information disclosure impact.
- Action
- Apply kernel patch fixing OOB read bounds checks in DP MST parser code.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68277
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-2026-682770.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 12% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-68277 | coverage & exploitation status | NVD · CVE.org |
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