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CVE-2026-74443

8.8 · HIGH

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->…

Published Aug 15, 2026EPSS 0.13%

Overview

CVE-2026-74443 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/036e16ada95389bdc30f41068af04c1d0872fad0Refgit.kernel.org/stable/c/7e40e6120fb232a10b543ffd994e5c6d8f3a2cc6Refgit.kernel.org/stable/c/9759da60e38d7b9db44dc92713e4e0391883d221Refgit.kernel.org/stable/c/a4a37080a5ac777b59306cfcdf854cc05d7604d4Refgit.kernel.org/stable/c/d5d7ada4e1296b00d89fe82b2ca850cc7809d6f7Refgit.kernel.org/stable/c/eb20f418933bea53375843b27b4022c1810be63bRefgit.kernel.org/stable/c/f4f1db96bfd68b81053693ba53405b6f510ac16cRefgit.kernel.org/stable/c/fcd1e56e7816b31a1050ccc67df722b20f6bb15d

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74443?

CVE-2026-74443 is a high-severity vulnerability. It was published on August 15, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-74443?

This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-74443?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-74443?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74443 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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