{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "98686cd21624c75a043e96812beadddf4f6f48e5"
            },
            {
              "fixed": "1d348f96623ec20d700af7d4dfc00a74da6238ac"
            },
            {
              "fixed": "bc1d694a1ffe0062c3adf0db1d64ad54454398ec"
            },
            {
              "fixed": "45d8896e4cffffb2c6554ccbec6efe7a0d53166f"
            },
            {
              "fixed": "1a51aff0e048dc5b8252d65808b79939c942d6ec"
            },
            {
              "fixed": "50c66bab321140c49aa2ed779a3ec9d2f085b458"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "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-2026-90366.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV\n\nWhen a CSA countdown is active, mt7996_mcu_beacon_cntdwn() emits two\nbss_bcn_cntdwn_tlv entries (the CSA countdown and the CCA-abort BCC), but\nMT7996_BEACON_UPDATE_SIZE only reserved one. With MBSSID enabled and a\nnear-maximum beacon template the extra 8 bytes could push the offload\ncommand past MT7996_MAX_BSS_OFFLOAD_SIZE and trigger skb_over_panic().\nReserve room for both countdown TLVs.",
  "id": "CVE-2026-90366",
  "modified": "2026-09-19T03:30:40.009806072Z",
  "published": "2026-09-17T16:09:08.785Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a51aff0e048dc5b8252d65808b79939c942d6ec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d348f96623ec20d700af7d4dfc00a74da6238ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45d8896e4cffffb2c6554ccbec6efe7a0d53166f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50c66bab321140c49aa2ed779a3ec9d2f085b458"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc1d694a1ffe0062c3adf0db1d64ad54454398ec"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90366.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90366"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: mt76: mt7996: reserve space for the CSA-abort countdown TLV"
}