{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-53178",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-53178"
  ],
  "published": "2026-06-25T08:41:40Z",
  "summary": "staging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: rtw_mlme: add bounds checks before ie_length subtraction\n\nAdd guards to ensure ie_length is large enough before subtracting\nfixed IE offsets to prevent unsigned integer underflow.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/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": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-53178"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/637e0ea73f690028796ee2fc72a2ac4ec32968c6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/542d65a6dbd9733baab96313c9fe76a76e93f484"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/88e994c57a79f62d5338231d8d37ee8dd98baffe"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-14T12:06:03Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 8.1,
      "cvss_v3_severity": "High",
      "scenario": "AV:A - The vulnerable rtl8723bs path processes 802.11 beacon/probe response information from nearby WiFi radios during scan/join/roam handling, so the attacker must be within wireless range rather than on an IP network.\nAC:L - An attacker can craft and transmit malformed management-frame data and trigger repeated scan/join candidate processing; no race or hard-to-control memory layout condition is required to reach the vulnerable IE walker.\nPR:N - The over-the-air management frames are processed before any WiFi authentication with the attacker-controlled AP/BSS, so no local or authenticated privileges are required.\nUI:N - Once the interface is scanning or attempting WPS/join/roam, the driver processes received management frames without a per-attack victim action.\nS:U - The impact is within the kernel/driver security authority and does not cross a hypervisor, IOMMU, or separate security scope boundary.\nC:H - The WPS path can underflow the IE length and pass a huge unsigned bound to `rtw_get_wps_ie`, causing an unbounded out-of-bounds kernel memory read.\nI:N - The affected calls only scan/compare IE bytes and do not copy attacker data into an out-of-bounds destination or provide an apparent write primitive.\nA:H - The out-of-bounds kernel read can fault or otherwise destabilize the kernel driver, making a kernel crash/oops a plausible outcome."
    }
  }
}