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.
Affected products
linux: linux kernel
References10
- git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa Patch
- git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55 Patch
- git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed Patch
- git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b Patch
- git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574 Patch
- git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59 Patch
- git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c Patch
- git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119 Patch
- cert-portal.siemens.com/productcert/html/ssa-019113.html
- cert-portal.siemens.com/productcert/html/ssa-082556.html
Metrics
- CVSS 3.1
-
7.1
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H - EPSS — exploit probability
- 0% percentile: 6 · as of 13 November 2026
- CWE
- CWE-125
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.