CVE-2025-71120
Last modified
CVE-2025-71120 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 4.19.99, < 4.20 | — |
| Linux | Linux Kernel | >= 5.4.15, < 5.5 | — |
| Linux | Linux Kernel | >= 5.5.1, < 5.10.248 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.198 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.160 | — |
| Linux | Linux Kernel | >= 6.2, < 6.6.120 | — |
| Linux | Linux Kernel | >= 6.7, < 6.12.64 | — |
| Linux | Linux Kernel | >= 6.13, < 6.18.3 | — |
| Linux | Linux Kernel | 5.5 | — |
| Linux | Linux Kernel | 6.19 | Rc1 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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