{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa"
            },
            {
              "fixed": "af9b7e2b765966457f4ec23be5bd34a141f89574"
            },
            {
              "fixed": "29ea965a1353bc8303877422f79c8211e9ba9c55"
            },
            {
              "fixed": "c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59"
            },
            {
              "fixed": "ded71f5684df16fa645cca5bf4fe6b0cd8a46119"
            },
            {
              "fixed": "d8795fde1f78669a87c87ac29fceab2f104daa8c"
            },
            {
              "fixed": "a28ebf6f99de270d6338ccdc3b49f3e818f99b7b"
            },
            {
              "fixed": "9d3f027327c2fa265f7f85ead41294792c3296ed"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.12"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.131"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.80"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.21"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31674.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()\n\nReject rt match rules whose addrnr exceeds IP6T_RT_HOPS.\n\nrt_mt6() expects addrnr to stay within the bounds of rtinfo-\u003eaddrs[].\nValidate addrnr during rule installation so malformed rules are rejected\nbefore the match logic can use an out-of-range value.",
  "id": "CVE-2026-31674",
  "modified": "2026-07-08T05:37:18.492072759Z",
  "published": "2026-04-25T08:46:50.180Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31674.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31674"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()"
}