Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.19.99, < 4.20 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1c8bb965e9b0559ff0f5690615a527c30f651dd8Patch
- https://git.kernel.org/stable/c/4dedb6a11243a5c9eb9dbb97bca3c98bd725e83dPatch
- https://git.kernel.org/stable/c/7452d53f293379e2c38cfa8ad0694aa46fc4788bPatch
- https://git.kernel.org/stable/c/a2c6f25ab98b423f99ccd94874d655b8bcb01a19Patch
- https://git.kernel.org/stable/c/a8f1e445ce3545c90d69c9e8ff8f7821825fe810Patch
- https://git.kernel.org/stable/c/d4b69a6186b215d2dc1ebcab965ed88e8d41768dPatch
- https://git.kernel.org/stable/c/f9e53f69ac3bc4ef568b08d3542edac02e83fefdPatch
FAQ
What is CVE-2025-71120?
CVE-2025-71120 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 == ...
How severe is CVE-2025-71120?
CVE-2025-71120 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-71120?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.