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CVE-2026-68447

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size CRIU checkpoint copies the MQD control stack using cp_hqd_cn…

Published Aug 12, 2026EPSS 0.11%

Overview

CVE-2026-68447 is a high-severity vulnerability. It was published on August 12, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, 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/amdkfd: clamp v9 CRIU control stack checkpoint copy to BO size

CRIU checkpoint copies the MQD control stack using cp_hqd_cntl_stack_size

from hardware without bounding it to the allocated BO region. If the HW

field is larger than the queue's control stack allocation, memcpy reads

past the BO into adjacent GTT memory and can leak kernel data to userspace.

Store the page-aligned control stack BO size in mqd_manager and clamp

checkpoint copies and reported checkpoint sizes to

min(cp_hqd_cntl_stack_size, mm->ctl_stack_size). Apply the same bound

for multi-XCC v9.4.3 checkpoint layout.

(cherry picked from commit 6c2abd0ec09e86c6323010673766f76050e28aa3)

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/426ffae6ecc7ec77d32bf8be065c21a1b881b084Refgit.kernel.org/stable/c/a0d87beb2660a5098b2b0ecdc1e96810a9074ea9

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68447?

CVE-2026-68447 is a high-severity vulnerability. It was published on August 12, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-68447?

This vulnerability has a CVSS 3.1 base score of 7.1, 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-2026-68447?

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-2026-68447?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68447 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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