{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e4f67addf158f98f8197e08974966b18480dc751"
            },
            {
              "fixed": "d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0"
            },
            {
              "fixed": "ec341bb76d77b4c2948764375ee6bfeef4bb41c3"
            },
            {
              "fixed": "ff89415d34c3ab9f5312316423122e664ed3524f"
            },
            {
              "fixed": "05f2987f73daa05333fd713d05546142f9f7c5f0"
            },
            {
              "fixed": "8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.8.0"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74475.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: use neigh_ha_snapshot() in route_shortcircuit()\n\nThe neighbour hardware address n-\u003eha can be updated asynchronously by the\nneighbour subsystem, protected by n-\u003eha_lock seqlock. Reading n-\u003eha without\nholding the seqlock loop can lead to torn reads or reading a partially updated\nMAC address.\n\nUse neigh_ha_snapshot() in route_shortcircuit() to safely copy n-\u003eha under\nread_seqbegin()/read_seqretry() lock protection before using it.\n\nNote that arp_reduce() and neigh_reduce() seem to have the same issue\nleft for future patches.",
  "id": "CVE-2026-74475",
  "modified": "2026-08-18T03:30:50.992684967Z",
  "published": "2026-08-15T12:27:10.685Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05f2987f73daa05333fd713d05546142f9f7c5f0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8eca411347e1d38964f9ed2c8d3b6ab0e7e4473d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d08e8ac13f2e228cc7fc3c70b5ebe71557b624a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec341bb76d77b4c2948764375ee6bfeef4bb41c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff89415d34c3ab9f5312316423122e664ed3524f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74475.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74475"
    },
    {
      "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:C/C:H/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "vxlan: use neigh_ha_snapshot() in route_shortcircuit()"
}