CVE-2026-31674

high

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.

References

https://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119

https://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c

https://git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59

https://git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574

https://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b

https://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed

https://git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55

https://git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa

Details

Source: Mitre, NVD

Published: 2026-04-25

Updated: 2026-04-25

Risk Information

CVSS v2

Base Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:P

Severity: Low

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Severity: High