CVE-2026-74443

Last refreshed2026-10-17

Status: UPDATED | Advisory ID: CVE-2026-74443

Key Details

CVE	CVE-2026-74443
CVSS Score / Version	8.8 (High) / CVSS v3.1
Updated	2026-10-16
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

drm/vmwgfx: bound DMA command body size against suffix pointer

vmw_cmd_dma() locates the DMA suffix at

(unsigned long) &cmd->body + header->size - sizeof(*suffix)

without checking that header->size is large enough to contain both

cmd->body and the suffix. An undersized header makes the suffix

pointer underflow back into the previous command in the bounce

buffer. The verifier later writes suffix->maximumOffset, clobbering

verified fields of an already-relocated earlier command -- a TOCTOU

on the device-visible command stream that lets one command rewrite

another's GMR id, surface id, or other authenticated fields.

Reject the command if the body is too small for the suffix to fit. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74443
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74443

Source

Reference

NVD

CVE