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CVE-2026-74708

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: xsk: validate launch-time metadata size Launch-time metadata extends beyond the first 16 bytes of struct xsk_tx_metadata.

Published Aug 22, 2026EPSS 0.17%

Overview

CVE-2026-74708 is a high-severity vulnerability. It was published on August 22, 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:

xsk: validate launch-time metadata size

Launch-time metadata extends beyond the first 16 bytes of struct

xsk_tx_metadata. Reject the request when the registered metadata area does

not contain the complete field.

Snapshot the validated flags for the generic transmit path and use that

snapshot for request and completion processing, avoiding inconsistent

decisions if user space changes the flags concurrently.

Note that only xsk_skb_metadata is properly using the flags,

__xsk_buff_get_metadata ignores them. Next commits address that.

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/439ce2dddf3d22129b9113a7881637256a35e936Refgit.kernel.org/stable/c/af511afa1d2977f384044df78d6fbf9fba653f7aRefgit.kernel.org/stable/c/bc63d47611c07b0d5d655fe1a590861931527920

How CyberStrike helps

Frequently asked questions

What is CVE-2026-74708?

CVE-2026-74708 is a high-severity vulnerability. It was published on August 22, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-74708?

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-2026-74708?

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-2026-74708?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-74708 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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