{"id":"CVE-2026-98428","published":"2026-10-14T14:17:54.460","lastModified":"2026-10-14T14:17:54.460","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb: 6fire: Avoid embedded URBs\n\nThe USB 6fire driver uses URBs embedded in different structs for PCM,\nMIDI and communication, and this is basically a buggy implementation\nnowadays; since a URB is managed with a refcount, this may lead to a\nUAF when the URB is released asynchronously.\n\nFor addressing the problem, this patch converts those embedded URBs to\nones that are properly allocated via usb_alloc_urb().  The\npcm_urb.packets[] is gone, as it's allocated by usb_alloc_urb(), hence\nit's found in urb.iso_frame_desc[] instead.\n\nThe conversions are rather straightforward; each embedded struct urb\nis changed to a pointer, and its callers are updated accordingly.\nThe resource for those structs are released in the common destructor\nfunctions (usb6fire_comm_free(), etc), which are called at both the\ninit error path and the disconnect.\n\nNo functional changes, only compile-tested.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a","tags":[]},{"url":"https://git.kernel.org/stable/c/52a43c2d57e774489ac3fbbac06ff02f19bd9a52","tags":[]},{"url":"https://git.kernel.org/stable/c/8b8559aeaba2e51cfee1779b2383b085991f7d81","tags":[]},{"url":"https://git.kernel.org/stable/c/999f433c09e4668412bd68ca207ae2b4af863862","tags":[]},{"url":"https://git.kernel.org/stable/c/9fe49dbc023e82dfaee7b245997d820d01742a9a","tags":[]},{"url":"https://git.kernel.org/stable/c/d181434549b3da668110a25d743848cce9897f4e","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}