{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "21c3f8f95554feff9bed15703e89adbe582e0383"
            },
            {
              "fixed": "099aadb2012d7490bc584cc5075ef11cbc33f2c3"
            },
            {
              "fixed": "e7bc5ab93acd1c3f54feeb9fa19ead3530168090"
            },
            {
              "fixed": "eef374088450bb91626e133c7172b8a0e969a522"
            },
            {
              "fixed": "cf57f0a674cc3e3cda1a789359cc1238b61b9d7d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.9.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90344.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: disconnect on CSA to channel 0\n\nThe refactor for the CSA parsing erroneously equates channel\nzero and no information present, leading it to ignore a CSA\non an AP that advertises a switch to that (invalid) channel.\nThis leads to not disconnecting, which we should. For Intel\ndevices, this can lead to a firmware crash.\n\nFix this by using an int type for the channel number as well\nas the opclass, and using a (negative) value that cannot be\nencoded in the element to indicate it's not present.",
  "id": "CVE-2026-90344",
  "modified": "2026-09-18T03:30:54.311990790Z",
  "published": "2026-09-17T16:08:54.311Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/099aadb2012d7490bc584cc5075ef11cbc33f2c3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf57f0a674cc3e3cda1a789359cc1238b61b9d7d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7bc5ab93acd1c3f54feeb9fa19ead3530168090"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eef374088450bb91626e133c7172b8a0e969a522"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90344.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90344"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: mac80211: disconnect on CSA to channel 0"
}