{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64441",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-64441"
  ],
  "published": "2026-07-25T08:51:45Z",
  "summary": "staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()\n\nThree IE/attribute parsing functions have missing bounds checks.\n\nrtw_get_sec_ie() and rtw_get_wapi_ie() iterate over a raw IE buffer\nwithout verifying that the header bytes (tag + length) are within the\nremaining buffer before reading them.  Additionally, rtw_get_sec_ie()\ncompares the 4-byte WPA OUI at cnt+2 without checking that at least\n6 bytes remain, and rtw_get_wapi_ie() compares a 4-byte WAPI OUI at\ncnt+6 without checking that at least 10 bytes remain.\n\nrtw_get_wps_attr() reads wps_ie[0] and wps_ie+2 unconditionally at\nentry, before verifying that wps_ielen is large enough to contain\nthe 6-byte WPS IE header (element_id + length + 4-byte OUI).  Inside\nthe attribute loop, get_unaligned_be16() is called on attr_ptr and\nattr_ptr+2 without checking that 4 bytes remain in the buffer.\n\nAdd a cnt+2 bounds check before each loop body in rtw_get_sec_ie()\nand rtw_get_wapi_ie(), guard each multi-byte comparison with a minimum\nIE length requirement, add a wps_ielen < 6 early return in\nrtw_get_wps_attr(), and add a 4-byte bounds check in its inner loop.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64441"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/efa27d487abcdec79669a60a6d94d5d6eceb7c1d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2ea1ce30ead61589214240e8d33d96310fd613e5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b27ecba3196f6c14e3809595ebd69c0c2392512a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4b51ee8a40fe47864197d73cc02b191de7a6b072"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/729c4e72563bda0f1725db1db9ea08df06f41d9b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z",
    "severity": {
      "source": "kernel CNA",
      "cvss_v3_score": 8.8,
      "cvss_v3_severity": "High",
      "scenario": "AV:A - Malformed beacon or probe-response information elements reach the vulnerable parsers over the air, so the attacker only needs to be within Wi-Fi radio range.\nAC:L - A crafted truncated WPS Selected Registrar attribute followed by controlled IE data deterministically supplies the out-of-bounds length; no race or uncontrollable condition is required.\nPR:N - Beacon and probe-response management frames are processed before association or authentication, and no capability or credential check gates this path.\nUI:N - The driver processes beacons automatically, and routine system-initiated scans reach the WPS path without human action.\nS:U - Exploitation compromises the kernel of the affected host without crossing a separate virtualization or authorization boundary.\nC:H - The out-of-bounds attribute length reaches a copy into a one-byte stack object, permitting control-flow corruption and potential kernel code execution with access to arbitrary kernel-resident data.\nI:H - The attacker can make adjacent controlled frame bytes overflow the one-byte stack destination, potentially overwriting control data and executing arbitrary kernel code.\nA:H - The bounded OOB reads can fault, while the derived stack overflow can trigger an oops, stack-canary panic, or control-flow failure and can be repeated using injected management frames."
    }
  }
}