CVE-2026-31674
Status: ModifiedHigh (7.1)—
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
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Base score: 7.1
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.17%
- Percentile among all scored CVEs: 6
- Score date: 10/6/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1068Exploitation for Privilege Escalationprivilege escalation85 % - Primary impact
T1499.004Application or System Exploitationimpact75 % - Secondary impact
T1565.001Stored Data Manipulationimpact60 %
Vulnerabilidad local (AV:L/PR:L) sin UI que permite manipular reglas netfilter con addrnr fuera de límite, causando acceso a memoria fuera de rango y denegación de servicio en kernel Linux. Escalada de privilegios o corrupción de datos.
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
CWEs
- NVD-CWE-noinfo
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
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Raw JSON (NVD)
Show
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