{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-68196",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-68196"
  ],
  "published": "2026-08-10T12:08:00Z",
  "summary": "wifi: wilc1000: validate assoc response length before subtracting header",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: validate assoc response length before subtracting header\n\nwilc_parse_assoc_resp_info() computes the trailing IE length as\n\n\ties_len = buffer_len - sizeof(*res);\n\nwithout first checking that buffer_len is at least sizeof(struct\nwilc_assoc_resp) (6 bytes). buffer_len is the length reported for a\nreceived association response (host_int_parse_assoc_resp_info() passes\nhif_drv->assoc_resp / assoc_resp_info_len straight in) and must be\nvalidated before the driver accesses the fixed header.\n\nFor a frame shorter than the 6-byte fixed header, the subtraction wraps.\nFor a four-byte response the result is truncated to a u16 ies_len of\n65534, so kmemdup() then attempts to copy 65534 bytes starting at\nbuffer + sizeof(*res), beyond the valid association-response data\n(CWE-125). A response shorter than four bytes can also cause an\nout-of-bounds read of res->status_code at offsets 2 and 3.\n\nReject frames too short to hold the fixed header before touching the\nheader or computing ies_len. Also set the connection status to a failure\non this path: the caller falls through to a\n\"conn_info->status == WLAN_STATUS_SUCCESS\" check after the parser\nreturns, so leaving the status untouched could let a malformed short\nresponse be treated as a successful association.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.183",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-68196"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d79b92417f33424ff23dad76716ed8f2cefb1083"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b81d0ea9e1daa215b3da68c1f4f6fb07940c2f6a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8d50acf5420de0c4da99c2d634731c9d3164a755"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/584c8954ad55f8b09b475be6db710fe40ceb988c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4d410320e8ae5933e651660c9fadc1d380309e23"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e511e93abd6eeedcd5b3c55516241f414fbde64a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8ccdf8c8de87a9580df37c3c1ec53ba88cedef65"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4c4c97b60a5e978121d9ee8cb0ab3916e5d6a8de"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-19T16:47:12Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 8.3,
      "cvss_v3_severity": "High",
      "scenario": "AV:A - Exploitation requires a rogue WiFi AP to send a malformed 802.11 Association Response over the air during STA join; per kernel guidance WiFi frame injection is Adjacent, not routable Network.\nAC:L - The attacker fully controls the rogue AP and can craft sub-6-byte association responses with SUCCESS status; once the victim initiates or auto-rejoins association, the malformed frame reliably reaches the parser.\nPR:N - No privileges on the victim are required; a remote attacker operating a rogue AP triggers the bug during the standard pre-authentication WiFi association handshake without local access or credentials.\nUI:N - Exploitation does not require per-attempt user action when devices auto-reconnect to a saved SSID or join an evil-twin AP broadcasting a known network name, which is common on embedded/IoT WILC1000 deployments.\nS:U - The vulnerability is confined to kernel memory and driver state on the affected host; impact does not cross a security boundary such as VM escape, sandbox escape, or IOMMU/DMA isolation bypass.\nC:H - Integer underflow drives kmemdup() to copy up to ~65534 bytes past the 512-byte assoc_resp buffer, leaking adjacent kernel heap data that is forwarded to userspace via cfg80211_connect_bss() response IEs.\nI:L - Beyond the OOB read, a malformed short response can leave conn_info->status as WLAN_STATUS_SUCCESS and report a bogus successful association, corrupting the device's connection integrity without granting arbitrary kernel write.\nA:H - The oversized kmemdup() memcpy reads far beyond the kmalloc-backed assoc_resp array, which can fault on unmapped memory and cause a kernel oops or panic; repeated triggers also impose severe memory pressure."
    }
  }
}