{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "5e6e3a92b9a4c9416b17f468fa5c7fa2233b8b4e"
            },
            {
              "fixed": "77e642af7f2f6029e12a35c847c56cbd0466e799"
            },
            {
              "fixed": "982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed"
            },
            {
              "fixed": "58767b41f87244eebaa5a475b9d276c83b89b933"
            },
            {
              "fixed": "2402c9e2644b7e10c7aaaf87bf12743d7e363559"
            },
            {
              "fixed": "54a9cc5bd70b0d77a5069d4c46998c679a10c857"
            },
            {
              "fixed": "8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960"
            },
            {
              "fixed": "46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df"
            },
            {
              "fixed": "e667aee1c192d67d27c803007bfa9c6e0873e959"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0"
            },
            {
              "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": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "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-2026-98186.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length\n\nmwifiex_search_oui_in_ie() reads a pairwise-cipher (PTK) count from a\nbeacon/probe-response RSN or WPA information element and then walks that\nmany 4-byte OUIs, comparing each with memcmp(). The count comes straight\nfrom the (attacker-supplied) IE and is never checked against the\nelement's own length, and the callers admit the element on element_id\nalone (has_ieee_hdr() / has_vendor_hdr(), no length check). A crafted\nRSN/WPA IE with a large pairwise count therefore makes the walk read up\nto 255 * 4 bytes past the element -- an out-of-bounds read of the\nkmemdup()'d beacon buffer, reachable from any AP whose beacon/probe\nresponse is processed during scan-result parsing.\n\nPass the number of IE bytes available at the OUI list and bound the walk\nto the element. Keep the length signed and reject a negative value\nbefore any unsigned arithmetic, so a small or zero IE length cannot\nunderflow to a large size_t and defeat the bound.\n\nFound by 0sec automated security-research tooling (https://0sec.ai).",
  "id": "CVE-2026-98186",
  "modified": "2026-10-07T02:30:19.720348496Z",
  "published": "2026-10-06T08:44:28.429Z",
  "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/2402c9e2644b7e10c7aaaf87bf12743d7e363559"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/46cda9d42f0d6ec3057d878ddb1f38c0ab9f51df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54a9cc5bd70b0d77a5069d4c46998c679a10c857"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58767b41f87244eebaa5a475b9d276c83b89b933"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77e642af7f2f6029e12a35c847c56cbd0466e799"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bbef2b1ebfbadc0b9c37bbbf9c9e26fe2e41960"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/982b8fcdbb28f63bbbf02f0822c0bbda12ec27ed"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e667aee1c192d67d27c803007bfa9c6e0873e959"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98186.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98186"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "wifi: mwifiex: bound the pairwise-cipher OUI walk to the IE length"
}