GHSA-V7JF-3MFX-CH6J
Vulnerability from github – Published: 2026-07-24 18:31 – Updated: 2026-08-13 18:31In 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.
{
"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": "MODERATE"
},
"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": "2026-08-13T18:31:10Z",
"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": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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