{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64446",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-64446"
  ],
  "published": "2026-07-25T08:51:45Z",
  "summary": "staging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix heap buffer overflow in rtw_cfg80211_set_wpa_ie()\n\nsupplicant_ie is a 256-byte array in struct security_priv. The WPA and\nWPA2 IE copy paths use:\n\n    memcpy(padapter->securitypriv.supplicant_ie, &pwpa[0], wpa_ielen + 2);\n\nwhere wpa_ielen is the raw IE length field (u8, 0-255). When a local user\nsupplies a connect request via nl80211 with a crafted WPA IE of length 255,\nwpa_ielen + 2 equals 257, overflowing the 256-byte buffer by one byte into\nthe adjacent last_mic_err_time field.\n\nrtw_parse_wpa_ie() does not prevent this: its length consistency check\ncompares *(wpa_ie+1) against (u8)(wpa_ie_len-2), which is (u8)(255) == 255\nwhen wpa_ie_len = 257, so the check passes silently.\n\nAdd explicit bounds checks for both the WPA and WPA2 paths before the\nmemcpy, rejecting any IE whose total size (wpa_ielen + 2) exceeds the\nsupplicant_ie buffer.",
  "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": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64446"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a94a643a80a84ceb8139061c3d6bf988d75e45a5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2131621986c62c86109ce4d84cf73a73757eb8a6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6f20d7b0ee47c470734a69379b0fc6647c519603"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5d7812360abf3143afcbf5efe4ef242448fa1f28"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/46f66c16a95191d9aca07a72ae6b1252a244e26c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b9c4bf133c3c47e23baf4f5403b98a953bf58606"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/138cd190efd56ab36c9fdd8fef8749d06937f24b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5a752a616e756844388a1a45404db9fc29fec655"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}