CVE-2026-74443: drm/vmwgfx: bound DMA command body size against suffix pointer
drm/vmwgfx: bound DMA command body size against suffix pointer
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.152.1-1 - Configuration
In drm/vmwgfx, update vmw_cmd_dma() to reject DMA commands when the body/header size cannot accommodate both cmd->body and the DMA suffix pointer (i.e., prevent pointer underflow by ensuring the suffix fits within the header->size).
Linux kernel (drm/vmwgfx) vmw_cmd_dma() suffix/header size validation = Reject the command if cmd->body header->size is too small for the suffix to fit
Event History
Frequently Asked Questions
What is the severity of CVE-2026-74443?
CVE-2026-74443 has a risk rating of 44, indicating it poses a significant potential threat to system security.
How do I fix CVE-2026-74443?
To fix CVE-2026-74443, update the Linux kernel to the latest version where the vulnerability has been resolved.
What software is affected by CVE-2026-74443?
CVE-2026-74443 affects the Linux kernel, particularly its drm/vmwgfx component.
What type of vulnerability is CVE-2026-74443?
CVE-2026-74443 is a memory safety vulnerability associated with DMA command processing in the Linux kernel.
When was CVE-2026-74443 published?
CVE-2026-74443 was published on August 15, 2026.