{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "9aaaa56845a06aeabdd597cbe19492dc01f281ec"
            },
            {
              "fixed": "49a5faaa471ddcd37b6893970c9916eb836e7c31"
            },
            {
              "fixed": "91359966e247c0244c66d50bbb8e74aefa4321c3"
            },
            {
              "fixed": "410351158dfef2d67fea6603680b3a6013c6ed9d"
            },
            {
              "fixed": "acdc12b71c9aa4be5dcd2c8062753c6d2033e235"
            },
            {
              "fixed": "929b1548e63ac72e104c07d8ee8cbbeeba2fa89a"
            },
            {
              "fixed": "af855f4c966afafef74faf8390c7b86568c0d46d"
            },
            {
              "fixed": "b9c015ef1a7bf1e8dc67f21c6381f36deb2c3a36"
            },
            {
              "fixed": "ff26a0e8377dec07e4a7230db7675bed1b9a6d03"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "d529d6c9f7e3aaeac13c4948f79799ccb825f29d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.4.14"
            },
            {
              "fixed": "5.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.5.0"
            },
            {
              "fixed": "5.10.258"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.142"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.92"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.34"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64046.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: tls: prevent chain-after-chain in plain text SG\n\nSashiko points out that if end = 0 (start != 0) the current\ncode will create a chain link to content type right after\nthe wrap link:\n\n  This would create a chain where the wrap link points directly\n  to another chain link. The scatterlist API sg_next iterator\n  does not recursively resolve consecutive chain links.\n\nmeaning this is illegal input to crypto.\n\nThe wrapping link is unnecessary if end = 0. end is the entry after\nthe last one used so end = 0 means there's nothing pushed after\nthe wrap:\n\n   end         start            i\n    v            v              v\n  [   ]...[   ][ d ][ d ][ d ][ d ][rsv for wrap]\n\nSkip the wrapping in this case.\n\nTLS 1.3 can use the \"wrapping slot\" for it's chaining if end = 0.\nThis avoids the chain-after-chain.\n\nMove the wrap chaining before marking END and chaining off content\ntype, that feels like more logical ordering to me, but should not\nmatter from functional perspective.",
  "id": "CVE-2026-64046",
  "modified": "2026-08-12T03:51:45.581295125Z",
  "published": "2026-07-19T15:39:31.129Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/410351158dfef2d67fea6603680b3a6013c6ed9d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49a5faaa471ddcd37b6893970c9916eb836e7c31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91359966e247c0244c66d50bbb8e74aefa4321c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/929b1548e63ac72e104c07d8ee8cbbeeba2fa89a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/acdc12b71c9aa4be5dcd2c8062753c6d2033e235"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/af855f4c966afafef74faf8390c7b86568c0d46d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b9c015ef1a7bf1e8dc67f21c6381f36deb2c3a36"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff26a0e8377dec07e4a7230db7675bed1b9a6d03"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64046.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64046"
    },
    {
      "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": "net: tls: prevent chain-after-chain in plain text SG"
}