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CVE-2025-71120

7.5 · HIGH
Published Jan 14, 2026 linux CWE-476

Overview

CVE-2025-71120 is a high-severity vulnerability affecting linux linux_kernel. It was published on January 14, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

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

SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf

A zero length gss_token results in pages == 0 and in_token->pages[0]

is NULL. The code unconditionally evaluates

page_address(in_token->pages[0]) for the initial memcpy, which can

dereference NULL even when the copy length is 0. Guard the first

memcpy so it only runs when length > 0.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 4.19.99, < 4.20 Affected

References

Ref git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8 Ref git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d Ref git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b Ref git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19 Ref git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810 Ref git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d Ref git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd Ref cert-portal.siemens.com/productcert/html/ssa-019113.html

Frequently Asked Questions

What is CVE-2025-71120?

CVE-2025-71120 is a high-severity vulnerability affecting linux linux_kernel. It was published on January 14, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-71120?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2025-71120?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2025-71120?

CyberStrike's AI-powered security agents can automatically detect CVE-2025-71120 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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