{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl\n\nJust like in a previous problem in this driver, usblp_ctrl_msg() will\ncollapse the usb_control_msg() return value to 0/-errno, discarding the\nactual number of bytes transferred.\n\nIdeally that short command should be detected and error out, but many\nprinters are known to send \"incorrect\" responses back so we can\u0027t just\ndo that.\n\nstatusbuf is kmalloc(8) at probe time and never filled before the first\nLPGETSTATUS ioctl.\n\nusblp_read_status() requests 1 byte. If a malicious printer responds\nwith zero bytes, *statusbuf is one byte of stale kmalloc heap,\nsign-extended into the local int status, which the LPGETSTATUS path then\ncopy_to_user()s directly to the ioctl caller.\n\nFix this all by just zapping out the memory buffer when allocated at\nprobe time.  If a later call does a short read, the data will be\nidentical to what the device sent it the last time, so there is no\n\"leak\" of information happening."
    }
  ],
  "id": "CVE-2026-46167",
  "lastModified": "2026-05-28T13:44:01.663",
  "metrics": {},
  "published": "2026-05-28T10:16:32.340",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6b0e7438e31c74b01514d31ff35c1e688c4baaba"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/762a6ccf391db0d629e590a803a3a2231e17dd3f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a502b997668401a6821501fc98b7f9220f9b6ff2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b38e53cbfb9d84732e5984fbd73e128d592415c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d06d937b0a4cdb8867f04275c8100a8b943da31a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-46167"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:32Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl\n\nJust like in a previous problem in this driver, usblp_ctrl_msg() will\ncollapse the usb_control_msg() return value to 0/-errno, discarding the\nactual number of bytes transferred.\n\nIdeally that short command should be detected and error out, but many\nprinters are known to send \"incorrect\" responses back so we can\u0027t just\ndo that.\n\nstatusbuf is kmalloc(8) at probe time and never filled before the first\nLPGETSTATUS ioctl.\n\nusblp_read_status() requests 1 byte. If a malicious printer responds\nwith zero bytes, *statusbuf is one byte of stale kmalloc heap,\nsign-extended into the local int status, which the LPGETSTATUS path then\ncopy_to_user()s directly to the ioctl caller.\n\nFix this all by just zapping out the memory buffer when allocated at\nprobe time.  If a later call does a short read, the data will be\nidentical to what the device sent it the last time, so there is no\n\"leak\" of information happening.",
  "id": "GHSA-vq8g-vcx9-rmc5",
  "modified": "2026-05-28T12:30:31Z",
  "published": "2026-05-28T12:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46167"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b0e7438e31c74b01514d31ff35c1e688c4baaba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/762a6ccf391db0d629e590a803a3a2231e17dd3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a502b997668401a6821501fc98b7f9220f9b6ff2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b38e53cbfb9d84732e5984fbd73e128d592415c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d06d937b0a4cdb8867f04275c8100a8b943da31a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
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        "url": "https://www.first.org/tlp/"
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    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
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    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-46167 usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46167.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl",
    "tracking": {
      "current_release_date": "2026-05-29T01:07:59.000Z",
      "generator": {
        "date": "2026-05-29T07:23:45.840Z",
        "engine": {
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      "id": "msrc_CVE-2026-46167",
      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
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          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
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  "vulnerabilities": [
    {
      "cve": "CVE-2026-46167",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "under_investigation": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-46167 usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46167.json"
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      ],
      "title": "usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl"
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}