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CVE-2026-64051

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Add overflow check to remap_pfn_range during mmap The call to remap_pfn_range in qaic_gem_object_mmap is susceptibl…

Published Jul 19, 2026EPSS 0.13%

Overview

CVE-2026-64051 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, 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:

accel/qaic: Add overflow check to remap_pfn_range during mmap

The call to remap_pfn_range in qaic_gem_object_mmap is susceptible to

(re)mapping beyond the VMA if the BO is too large. This can cause use

after free issues when munmap() unmaps only the VMA region and not the

additional mappings. To prevent this, check the remaining size of the

VMA before remapping and truncate the remapped length if sg->length is

too large.

[jhugo: fix braces from checkpatch --strict]

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/8c795012d0e06b7740e40319b86ff8d2a435098dRefgit.kernel.org/stable/c/8dd6edbe26770df147136c3f2ac976c873b82650Refgit.kernel.org/stable/c/97a8e89cdef36207a8776edc03d6931763a06ad0Refgit.kernel.org/stable/c/9baafc2fea096279e75480f93fd5942e8336b510Refgit.kernel.org/stable/c/aa16b2bc0f02709919e2435f531406531e5bcc69

How CyberStrike helps

Frequently asked questions

What is CVE-2026-64051?

CVE-2026-64051 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-64051?

This vulnerability has a CVSS 3.1 base score of 7.8, 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-2026-64051?

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-2026-64051?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-64051 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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