CVE-2026-31674
Published: April 28, 2026Last modified: April 28, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.1 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.168-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.80-r0) |
References
- https://git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa
- https://git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55
- https://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed
- https://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b
- https://git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574
- https://git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59
- https://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c
- https://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119