{
  "cveId": "CVE-2026-64565",
  "url": "https://patchblox.com/security/cve/CVE-2026-64565",
  "summary": "CVE-2026-64565 is fixed in 17 products on 1 platform, first by DEBIAN-CVE-2026-64565, released August 4, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  Input: ims-pcu - fix heap-buffer-overflow in ims_pcu_process_data()  The \u0060ims_pcu_process_data()\u0060 processes incoming URB data byte by byte. However, it fails to check if the \u0060read_pos\u0060 index exceeds IMS_PCU_BUF_SIZE.  If a malicious USB device sends a packet larger than IMS_PCU_BUF_SIZE, \u0060read_pos\u0060 will increment indefinitely. Moreover, since \u0060read_pos\u0060 is located immediately after \u0060read_buf\u0060, the attacker can overwrite \u0060read_pos\u0060 itself to arbitrarily control the index.  This manipulated \u0060read_pos\u0060 is subsequently used in \u0060ims_pcu_handle_response()\u0060 to copy data into \u0060cmd_buf\u0060, leading to a heap buffer overflow.  Specifically, an attacker can overwrite the \u0060cmd_done.wait.head\u0060 located at offset 136 relative to \u0060cmd_buf\u0060 in the \u0060ims_pcu_handle_response()\u0060. Consequently, when the driver calls \u0060complete(\u0026pcu-\u003Ecmd_done)\u0060, it triggers a control flow hijack by using the manipulated pointer.  Fix this by adding a bounds check for \u0060read_pos\u0060 before writing to \u0060read_buf\u0060. If the packet is too long, discard it, log a warning, and reset the parser state.  [dtor: factor out resetting packet state, reset checksum as well]",
  "published": "2026-08-04T07:16:31Z",
  "severity": "Critical",
  "cvss": 9.8,
  "epss": 0.00184,
  "epssPercentile": 0.08045,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-64565",
  "fixes": [
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      "fix": "OPENSUSE-SU-2026:21910-1",
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      "released": "2026-09-22T15:26:20Z"
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      "fix": "OPENSUSE-SU-2026:21910-1",
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      "released": "2026-09-22T15:26:20Z"
    },
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      "fix": "SUSE-SU-2026:4254-1",
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      "released": "2026-10-07T22:31:36Z"
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  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}