GHSA-V7JF-3MFX-CH6J

Vulnerability from github – Published: 2026-07-24 18:31 – Updated: 2026-07-24 18:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

media: rc: igorplugusb: fix control request setup packet

Commit eac69475b01f ("media: rc: igorplugusb: heed coherency rules") changed the control request storage from an embedded struct to an allocated pointer so it can obey DMA coherency rules.

However, the driver still passes &ir->request to usb_fill_control_urb(). That points the URB setup packet at the pointer field itself rather than at the allocated struct usb_ctrlrequest.

USB core then interprets pointer bytes as the setup packet. This can produce an invalid bRequestType and trigger the control direction warning reported by syzbot:

usb 2-1: BOGUS control dir, pipe 80003580 doesn't match bRequestType 0

Pass ir->request itself as the setup packet.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64240"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-24T16:16:53Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: rc: igorplugusb: fix control request setup packet\n\nCommit eac69475b01f (\"media: rc: igorplugusb: heed coherency\nrules\") changed the control request storage from an embedded struct to\nan allocated pointer so it can obey DMA coherency rules.\n\nHowever, the driver still passes \u0026ir-\u003erequest to usb_fill_control_urb().\nThat points the URB setup packet at the pointer field itself rather than\nat the allocated struct usb_ctrlrequest.\n\nUSB core then interprets pointer bytes as the setup packet. This can\nproduce an invalid bRequestType and trigger the control direction warning\nreported by syzbot:\n\n  usb 2-1: BOGUS control dir, pipe 80003580 doesn\u0027t match bRequestType 0\n\nPass ir-\u003erequest itself as the setup packet.",
  "id": "GHSA-v7jf-3mfx-ch6j",
  "modified": "2026-07-24T18:31:28Z",
  "published": "2026-07-24T18:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64240"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/060fca8e098387f949e4eedaf215d952e477ac12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d880d2db9856e94127ab09331363bef59f98005"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/171022c7d594c133a45f92357a2a91475edabe20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2243ad78ce64d344754260533ae7730c2174a34a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5cc3f6db72f77d1a8f7f1cf4ac01803927ffdf15"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa22590a16e51455c6db802c774b31aadc604a9a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e823e4294511989f5962e7ad85bf4d179ba74f52"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f33b5a61673bd220fdaaf4202cf1013d6d66c943"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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