{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a831f5bbc89a9978795504be9e1ff412043f8f77"
            },
            {
              "fixed": "f8aabed3ff3e986920cf02a2a2785e08e586b234"
            },
            {
              "fixed": "1a11eb7431e3d2882f5bd5939c5a9bbc65ccf4d1"
            },
            {
              "fixed": "12d957979e4a800167842f1b42be6a606d227ebe"
            },
            {
              "fixed": "ff375ed1cba81392346c5bfbf0bb7a13b2946f99"
            },
            {
              "fixed": "751db1b802a067b7fff25880f4e9f9152a171538"
            },
            {
              "fixed": "9b6dcc0a39fd71752937f0b6b3973e1416085dcf"
            },
            {
              "fixed": "f7b52afe3592eae66e160586b45a3f2242972c63"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.19"
            },
            {
              "fixed": "5.15.210"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.176"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.143"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.93"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.35"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63922.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: exthdrs: refresh nh after handling HAO option\n\nip6_parse_tlv() caches skb_network_header(skb) in nh while walking\nIPv6 TLVs.\n\nipv6_dest_hao() may call pskb_expand_head() for a cloned skb, which can\nmove the skb head and invalidate the cached network header pointer.\nRefresh nh after ipv6_dest_hao() returns so any trailing padding or TLVs\nare parsed from the current skb head.\n\nThis matches the existing pattern used in ip6_parse_tlv() after helpers\nthat can modify skb header storage.",
  "id": "CVE-2026-63922",
  "modified": "2026-07-22T05:30:12.737249914Z",
  "published": "2026-07-19T14:55:24.268Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/12d957979e4a800167842f1b42be6a606d227ebe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a11eb7431e3d2882f5bd5939c5a9bbc65ccf4d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/751db1b802a067b7fff25880f4e9f9152a171538"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b6dcc0a39fd71752937f0b6b3973e1416085dcf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7b52afe3592eae66e160586b45a3f2242972c63"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8aabed3ff3e986920cf02a2a2785e08e586b234"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff375ed1cba81392346c5bfbf0bb7a13b2946f99"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63922.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63922"
    },
    {
      "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": "ipv6: exthdrs: refresh nh after handling HAO option"
}