GHSA-2X99-3H9H-F4C9
Vulnerability from github – Published: 2026-08-06 09:30 – Updated: 2026-08-08 15:30In the Linux kernel, the following vulnerability has been resolved:
ALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on each resubmission
In capture_urb_complete(), usb_anchor_urb() is called on every completion callback, but the URB is already anchored from the initial submission in tascam_trigger_start(). Each redundant call corrupts the anchor's doubly-linked list and inflates the URB refcount. When usb_kill_anchored_urbs() traverses the list during stream stop / suspend / disconnect, the corrupted list leads to use-after-free.
Remove the redundant usb_anchor_urb() from the resubmit path.
{
"affected": [],
"aliases": [
"CVE-2026-64601"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-06T08:16:35Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: us144mkii: capture_urb_complete: redundant usb_anchor_urb corrupts anchor list on each resubmission\n\nIn capture_urb_complete(), usb_anchor_urb() is called on every\ncompletion callback, but the URB is already anchored from the\ninitial submission in tascam_trigger_start(). Each redundant call\ncorrupts the anchor\u0027s doubly-linked list and inflates the URB\nrefcount. When usb_kill_anchored_urbs() traverses the list during\nstream stop / suspend / disconnect, the corrupted list leads to\nuse-after-free.\n\nRemove the redundant usb_anchor_urb() from the resubmit path.",
"id": "GHSA-2x99-3h9h-f4c9",
"modified": "2026-08-08T15:30:25Z",
"published": "2026-08-06T09:30:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64601"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/16f14f55141d4c55c3f321f93c328fff7cd6860a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5cff1529a2f9b3461a7f5a6e36a86682fc290534"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ab1db64912428cdf06a4f9542e16e0575e9ad59f"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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