CVE-2026-68446: drm/vmwgfx: Validate vmw_surface_metadata::array_size

lowCVSS 3.3CVE-2026-68446

CSIRTS triage

vendor: Linux product: Linux Kernel Privilege escalation

What: The drm/vmwgfx driver does not validate the array_size field in vmw_surface_metadata, allowing out-of-bounds access.
Who is affected: Systems running Linux kernel with vmwgfx DRM driver enabled.
Urgency: Low priority; CVSS 3.3 indicates limited exploitability.
Action: Apply Linux kernel patch to add array_size validation in vmw_surface_metadata.

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: low — CVSS 3.3
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68446

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-2026-684460.12% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 2% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68446	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

Recent advisories for drm/vmwgfx

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-2026-74445: In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: reject DX_BIND…nvd · 2026-08-15
highCVE-2026-74444: In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: validate DRAW_…nvd · 2026-08-15
highCVE-2026-74443: In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: bound DMA comm…nvd · 2026-08-15
unknownCVE-2026-74442: In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: avoid destroy_…nvd · 2026-08-15
highCVE-2026-68446: In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate vmw_s…nvd · 2026-08-12
highCVE-2026-74444: drm/vmwgfx: validate DRAW_PRIMITIVES header size before divisionmsrc · 2026-08-11