{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9d1d2b59341f58126a69b51f9f5f8ccb9f12e54a"
            },
            {
              "fixed": "794586789800b16dcbe235452494f4223ac80413"
            },
            {
              "fixed": "1c4422d8be81718ecb15d79aedff607323085201"
            },
            {
              "fixed": "f564af387c8c28238f8ebc13314c589d7ba8475d"
            }
          ],
          "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-2026-31631.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix buffer overread in rxgk_do_verify_authenticator()\n\nFix rxgk_do_verify_authenticator() to check the buffer size before checking\nthe nonce.",
  "id": "CVE-2026-31631",
  "modified": "2026-07-15T01:48:58.800442591Z",
  "published": "2026-04-24T14:44:47.305Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c4422d8be81718ecb15d79aedff607323085201"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/794586789800b16dcbe235452494f4223ac80413"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f564af387c8c28238f8ebc13314c589d7ba8475d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31631.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31631"
    },
    {
      "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:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "rxrpc: Fix buffer overread in rxgk_do_verify_authenticator()"
}