# CVE-2026-31674

> Vulnerability · severity: **HIGH** (CVSS 7.1).

## Description

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

netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()

Reject rt match rules whose addrnr exceeds IP6T_RT_HOPS.

rt_mt6() expects addrnr to stay within the bounds of rtinfo->addrs[].
Validate addrnr during rule installation so malformed rules are rejected
before the match logic can use an out-of-range value.

## Key facts

- **CVE ID:** CVE-2026-31674
- **Published:** 2026-04-25
- **CVSS severity:** HIGH
- **CVSS base score:** 7.1
- **CWE codes:** NVD-CWE-noinfo

## Affected products

- `linux:linux_kernel`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-31674

## Citation

> AI Analytics. CVE-2026-31674. Retrieved 2026-07-28 from https://api.ai-analytics.org/cve/CVE-2026-31674. Derived from NIST NVD. Licensed CC0.

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