Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.12.1, < 5.10.253 |
References
- https://git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfaPatch
- https://git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55Patch
- https://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296edPatch
- https://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7bPatch
- https://git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574Patch
- https://git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59Patch
- https://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8cPatch
- https://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119Patch
FAQ
What is CVE-2026-31674?
CVE-2026-31674 is a vulnerability with a CVSS score of 7.1 (HIGH). 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() e...
How severe is CVE-2026-31674?
CVE-2026-31674 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-31674?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.