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CVE-2025-71129

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Sign extend kfunc call arguments The kfunc calls are native calls so they should follow LoongArch calling conve…

Published Jan 14, 2026EPSS 0.14%

Overview

CVE-2025-71129 is a medium-severity vulnerability. It was published on January 14, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

LoongArch: BPF: Sign extend kfunc call arguments

The kfunc calls are native calls so they should follow LoongArch calling

conventions. Sign extend its arguments properly to avoid kernel panic.

This is done by adding a new emit_abi_ext() helper. The emit_abi_ext()

helper performs extension in place meaning a value already store in the

target register (Note: this is different from the existing sign_extend()

helper and thus we can't reuse it).

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/0d666db731e95890e0eda7ea61bc925fd2be90c6Refgit.kernel.org/stable/c/321993a874f571a94b5a596f1132f798c663b56eRefgit.kernel.org/stable/c/3f5a238f24d7b75f9efe324d3539ad388f58536eRefgit.kernel.org/stable/c/fd43edf357a3a1f5ed1c4bf450b60001c9091c39

How CyberStrike helps

Frequently asked questions

What is CVE-2025-71129?

CVE-2025-71129 is a medium-severity vulnerability. It was published on January 14, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-71129?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-71129?

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-2025-71129?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-71129 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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