# CVE-2025-71120

## Summary

- **CVE ID:** CVE-2025-71120
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** N/A
- **Published:** Jan 14, 2026
- **Last Modified:** Sep 8, 2026

## 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.

## Affected Products

- Linux — Linux (5866efa8cbfbadf3905072798e96652faf02dbe8)
- Linux — Linux (66ed7b413d31c6ff23901ac4443b1cc1af2f6113)
- Linux — Linux (7be8c165dc81564705e8e0b72d398ef708f67eaa)
- Linux — Linux (5.5)
- Linux — Linux (0)
- Linux — Linux (5.10.248)
- Linux — Linux (5.15.198)
- Linux — Linux (6.1.160)
- Linux — Linux (6.6.120)
- Linux — Linux (6.12.64)
- Linux — Linux (6.18.3)
- Linux — Linux (6.19)
- Linux — Linux (4.19.99)
- Linux — Linux (5.4.15)

## References

- [CNA](https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810)
- [CNA](https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d)
- [CNA](https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefd)
- [CNA](https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788b)
- [CNA](https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19)
- [CNA](https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8)
- [CNA](https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768d)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-019113.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.48%
- **EPSS Percentile:** 40.6

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._