{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8b40b1d24a6099fe9fac8e207d4cb04ab5e0baae"
            },
            {
              "fixed": "3beddbd56946577478fd5e649f556aaaebe15b0a"
            },
            {
              "fixed": "e6031f02269c0f51cf67886d177f02bc300b47cd"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98183.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: avoid out-of-bounds read for empty PREQ elements\n\nieee80211_mesh_preq_size_ok() derives the location of the PREQ bottom\nfields before checking whether the element contains even the fixed\nheader. ieee80211_mesh_hwmp_preq_get_bottom() reads the flags byte to\naccount for the optional Address Extension field. Consequently, an\nempty PREQ element causes a one-byte read beyond its declared payload.\n\nMove the helper call after both size checks, so the bottom fields are\nonly accessed when they are present.",
  "id": "CVE-2026-98183",
  "modified": "2026-10-08T02:30:36.597512987Z",
  "published": "2026-10-06T08:44:26.024Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3beddbd56946577478fd5e649f556aaaebe15b0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e6031f02269c0f51cf67886d177f02bc300b47cd"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98183.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98183"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: mac80211: avoid out-of-bounds read for empty PREQ elements"
}