7.5

CVE-2025-71120: linux NULL Pointer Dereference

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2025-71120DEBIAN-CVE-2025-71120
Published 14-01-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2025-71120 is a high (CVSS 7.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.53% chance of exploitation in the next 30 days, higher than 43.6% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.53%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 150 · Related 146
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0017MGASA-2026-0018

Showing 100 of 152. Use Open JSON for the complete list.

Timeline

  1. 14-01-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.53%

Chance of exploitation in the next 30 days

Percentile

44%

Versus all other CVEs

30-day change

+0.05 pp

From 0.48% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.53%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu155 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-110.110 | < 6.17.0-22.22
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1052.55 | < 6.17.0-1012.12
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 5866efa8cbfbadf3905072798e96652faf02dbe8, < a8f1e445ce3545c90d69c9e8ff8f7821825fe810 | ≥ 5866efa8cbfbadf3905072798e96652faf02dbe8, < 4dedb6a11243a5c9eb9dbb97bca3c98bd725e83d | ≥ 5866efa8cbfbadf3905072798e96652faf02dbe8, < f9e53f69ac3bc4ef568b08d3542edac02e83fefd | ≥ 5866efa8cbfbadf3905072798e96652faf02dbe8, < 7452d53f293379e2c38cfa8ad0694aa46fc4788b | ≥ 5866efa8cbfbadf3905072798e96652faf02dbe8, < a2c6f25ab98b423f99ccd94874d655b8bcb01a19 | ≥ 5866efa8cbfbadf3905072798e96652faf02dbe8, < 1c8bb965e9b0559ff0f5690615a527c30f651dd8 | ≥ 5866efa8cbfbadf3905072798e96652faf02dbe8, < d4b69a6186b215d2dc1ebcab965ed88e8d41768d | 66ed7b413d31c6ff23901ac4443b1cc1af2f6113 | 7be8c165dc81564705e8e0b72d398ef708f67eaa | ≥ 4.19.99, < 4.20 | ≥ 5.4.15, < 5.5 | 5.5
  • linux_kernel≥ 4.19.99, < 4.20 | ≥ 5.4.15, < 5.5 | ≥ 5.5.1, < 5.10.248 | ≥ 5.11, < 5.15.198 | ≥ 5.16, < 6.1.160 | ≥ 6.2, < 6.6.120 | ≥ 6.7, < 6.12.64 | ≥ 6.13, < 6.18.3 | 5.5 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.3-1

3 vendors · 158 products

References

43 links
Show all 43 references