{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "c9c99f8938e41b878802d5d8481d6f7a212515b0"
            },
            {
              "fixed": "51092dc769f021e9634474e1bd5a561da477fbdb"
            },
            {
              "fixed": "a6ed4c00ccdc15011a73daa2b38af9fc5a2c543e"
            },
            {
              "fixed": "80d1a110e9096b5bf41497f6b151154084862385"
            },
            {
              "fixed": "a78689e2beed200d4590318612c74ae25c9408cf"
            },
            {
              "fixed": "7a5ef1fd654d0e90d59aa32c881789c8bcc4125a"
            },
            {
              "fixed": "9df64ad43e1f2c036667bba2bf385e9d7b3af564"
            },
            {
              "fixed": "4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.2.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98891.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: validate deauth frame length before reason access\n\nieee80211_rx_mgmt_deauth() reads the deauth reason code before checking\nthat the fixed field is actually present in the received frame.\n\nValidate the deauth frame length first and only then read the reason\ncode.",
  "id": "CVE-2026-98891",
  "modified": "2026-10-28T02:30:36.756300572Z",
  "published": "2026-10-23T11:37:51.588Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a360c6e18dfa9d70006c7247a6a8cc8dfe0d60f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/51092dc769f021e9634474e1bd5a561da477fbdb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7a5ef1fd654d0e90d59aa32c881789c8bcc4125a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80d1a110e9096b5bf41497f6b151154084862385"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9df64ad43e1f2c036667bba2bf385e9d7b3af564"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a6ed4c00ccdc15011a73daa2b38af9fc5a2c543e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a78689e2beed200d4590318612c74ae25c9408cf"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98891.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98891"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.2",
  "summary": "wifi: mac80211: validate deauth frame length before reason access"
}