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CVE-2026-68400

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation Use the descriptor's `ep_mem_offset` to calculate t…

Published Aug 10, 2026EPSS 0.13%

Overview

CVE-2026-68400 is a high-severity vulnerability. It was published on August 10, 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:

firmware: arm_ffa: Fix Endpoint Memory Access Descriptor offset calculation

Use the descriptor's `ep_mem_offset` to calculate the start of the endpoint

memory access array and to comply with the FF-A spec instead of defaulting

to `sizeof(struct ffa_mem_region)`.

This requires moving `ffa_mem_region_additional_setup()` earlier in the setup

flow.

Also, add sanity checks to ensure the calculated descriptor offsets do not

exceed `max_fragsize`.

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/8ef18f0ab3c0ec1eac77289f5a542bd96a8a6d66Refgit.kernel.org/stable/c/b39b08e6bee812514b449dc874076890e6b871a0Refgit.kernel.org/stable/c/b4d961351aa84fdf0148783fb1f3a1391b8a0adb

How CyberStrike helps

Frequently asked questions

What is CVE-2026-68400?

CVE-2026-68400 is a high-severity vulnerability. It was published on August 10, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-68400?

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-2026-68400?

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-2026-68400?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-68400 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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