{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c1aa8347e73e4092411fbd96cc59531fb7e76d04"
            },
            {
              "fixed": "158b9995d3c87f3b93f5c22df54a12e12a3438b3"
            },
            {
              "fixed": "7c6876ec1b227261b51803f784c7be1b2242a1a0"
            },
            {
              "fixed": "2c4de9988e9ddc760b750d6b6e701c35ff60ad14"
            },
            {
              "fixed": "2a99224c120823987e4d829726f4ecb33e03fc1e"
            },
            {
              "fixed": "61e78679c7c9ca685bff58e4b6348304dc60aafd"
            },
            {
              "fixed": "4a4a1d41c6e901e773bcf795f562a47fa71f692a"
            },
            {
              "fixed": "f618cbe9b24cd0202004d2db781d5f80ab77037f"
            },
            {
              "fixed": "d335dcc6f521571d57117b8deeebc940836e5450"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.19.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72351.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngue: validate REMCSUM private option length\n\nGUE private flags can indicate that remote checksum offload metadata is\npresent. The private flags field itself is accounted for by\nguehdr_flags_len(), but guehdr_priv_flags_len() currently returns 0 even\nwhen GUE_PFLAG_REMCSUM is set.\n\nThis lets a packet with only the private flags field pass\nvalidate_gue_flags(), after which gue_remcsum() and gue_gro_remcsum()\nread the missing REMCSUM start/offset fields from the following bytes.\n\nAccount for GUE_PLEN_REMCSUM when GUE_PFLAG_REMCSUM is present so that\nmalformed packets are rejected during option validation.",
  "id": "CVE-2026-72351",
  "modified": "2026-08-18T03:31:04.946813780Z",
  "published": "2026-08-15T05:55:54.150Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/158b9995d3c87f3b93f5c22df54a12e12a3438b3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a99224c120823987e4d829726f4ecb33e03fc1e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c4de9988e9ddc760b750d6b6e701c35ff60ad14"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a4a1d41c6e901e773bcf795f562a47fa71f692a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/61e78679c7c9ca685bff58e4b6348304dc60aafd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c6876ec1b227261b51803f784c7be1b2242a1a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d335dcc6f521571d57117b8deeebc940836e5450"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f618cbe9b24cd0202004d2db781d5f80ab77037f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72351.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72351"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "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": "gue: validate REMCSUM private option length"
}