{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a"
            },
            {
              "fixed": "1f864d9daaf622aeaa774404fd51e7d6a435b046"
            },
            {
              "fixed": "c1e242beb6b1efc3c286f617e8d940c8fbf2ed41"
            },
            {
              "fixed": "699e52180f4231c257821c037ed5c99d5eb0edb8"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.16.0"
            },
            {
              "fixed": "6.18.23"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31633.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix integer overflow in rxgk_verify_response()\n\nIn rxgk_verify_response(), there's a potential integer overflow due to\nrounding up token_len before checking it, thereby allowing the length check to\nbe bypassed.\n\nFix this by checking the unrounded value against len too (len is limited as\nthe response must fit in a single UDP packet).",
  "id": "CVE-2026-31633",
  "modified": "2026-07-15T01:48:58.915066911Z",
  "published": "2026-04-24T14:44:48.621Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1f864d9daaf622aeaa774404fd51e7d6a435b046"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/699e52180f4231c257821c037ed5c99d5eb0edb8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c1e242beb6b1efc3c286f617e8d940c8fbf2ed41"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31633.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31633"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "rxrpc: Fix integer overflow in rxgk_verify_response()"
}