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CVE-2026-63860

8.4 · HIGH

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Prefer NLA_NUL_STRING These attributes are evaluated as c-string (passed to strcmp), but NLA_STRING doesn't check fo…

Published Jul 19, 2026EPSS 0.14%

Overview

CVE-2026-63860 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/core: Prefer NLA_NUL_STRING

These attributes are evaluated as c-string (passed to strcmp), but

NLA_STRING doesn't check for the presence of a \0 terminator.

Either this needs to switch to nla_strcmp() and needs to adjust printf fmt

specifier to not use plain %s, or this needs to use NLA_NUL_STRING.

As the code has been this way for long time, it seems to me that userspace

does include the terminating nul, even tough its not enforced so far, and

thus NLA_NUL_STRING use is the simpler solution.

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/137b5918931d4d05aa8ea8d3adf67f7224eef63cRefgit.kernel.org/stable/c/5877c043398d5fa0e93919a3d837e5cd7a98a961Refgit.kernel.org/stable/c/6ed3d14fc45d3da6025e7fe4a6a09066856698e2Refgit.kernel.org/stable/c/87111356d58d86edb221ba144d261ed83a5b8bbeRefgit.kernel.org/stable/c/abda65bdd13084c771842adaac1f652d0660dd82Refgit.kernel.org/stable/c/c26a0052cceed4c4d380ee5808b699f937fb58d8Refgit.kernel.org/stable/c/f2c7b39dde2e61df8157066969cc2a408cd3dcd9Refgit.kernel.org/stable/c/fcd07d3b8ee7a39b344d73aed69c1a68cd9eacdf

How CyberStrike helps

Frequently asked questions

What is CVE-2026-63860?

CVE-2026-63860 is a high-severity vulnerability. It was published on July 19, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-63860?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-63860?

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-2026-63860?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-63860 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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