{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64536",
  "modified": "2026-10-09T11:39:44Z",
  "upstream": [
    "CVE-2026-64536"
  ],
  "published": "2026-07-27T06:36:02Z",
  "summary": "staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop\n\nThe loop in is_ap_in_tkip() iterates over IEs without verifying that\nenough bytes remain before dereferencing the IE header or its payload:\n\n- pIE->element_id and pIE->length are read without checking that\n  i + sizeof(*pIE) <= ie_length, so a truncated IE at the end of the\n  buffer causes an OOB read.\n\n- For WLAN_EID_VENDOR_SPECIFIC the code compares pIE->data + 12,\n  which requires pIE->length >= 16.  For WLAN_EID_RSN it compares\n  pIE->data + 8, requiring pIE->length >= 12.  Neither requirement\n  is checked.\n\nAdd the missing IE header and payload bounds checks and guard each\ndata access with an explicit pIE->length minimum, matching the\npattern established in update_beacon_info().",
  "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": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64536"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d2055332297e24c63fffda943ef7a5eefc0a6019"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6f26cc55affd9d7f88ae2f5d12db4ecf9072c209"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/204b22c8df115370037248859bf0fa62db73a396"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4380b3860d887a13555ff024a58dfc05b490dfd6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3bf39f711ff27c64be8680a8938bcc5001982e81"
    }
  ],
  "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": 8.1,
      "cvss_v3_severity": "High",
      "scenario": "AV:A - A nearby malicious WiFi access point can supply crafted beacon or probe-response IEs that reach the vulnerable association path over the air.\nAC:L - The attacker directly controls the malformed IE lengths and contents, and exploitation requires neither a race nor conditions outside the attacker's control.\nPR:N - The vulnerable code executes before WPA credentials are verified; transmitting management frames as a malicious or spoofed AP requires no privileges on the target.\nUI:N - An attacker impersonating a configured AP can trigger the path during automatic connection or reconnection without contemporaneous user action.\nS:U - The vulnerable driver and affected kernel resources belong to the same host security authority, with no demonstrated VM, sandbox, or IOMMU boundary crossing.\nC:H - The unchecked IE-header and fixed-offset comparisons read beyond attacker-declared buffer boundaries into adjacent kernel memory; under the required conservative OOB-read rule, confidentiality impact is high.\nI:N - The flaw performs reads and comparisons only, with no memory write or demonstrated data-modification primitive.\nA:H - Malformed IEs can cause kernel out-of-bounds accesses during association and potentially fault or oops the kernel; a nearby attacker can repeat the exchange."
    }
  }
}