CVE-2026-98428
In the Linux kernel, the following vulnerability has been resolved: ALSA: usb: 6fire: Avoid embedded URBs The USB 6fire driver uses URBs embedded in different structs for PCM, MIDI and communication, and this is basically a buggy implementation nowadays; since a URB is managed with a refcount, this may lead to a UAF when the URB is released asynchronously. For addressing the problem, this patch converts those embedded URBs to ones that are properly allocated via usb_alloc_urb(). The pcm_urb.packets[] is gone, as it's allocated by usb_alloc_urb(), hence it's found in urb.iso_frame_desc[] instead. The conversions are rather straightforward; each embedded struct urb is changed to a pointer, and its callers are updated accordingly. The resource for those structs are released in the common destructor functions (usb6fire_comm_free(), etc), which are called at both the init error path and the disconnect. No functional changes, only compile-tested.
Affected versions
Fixed in
6.1.189,
6.6.158,
6.12.112,
6.18.54,
7.2.8,
7.3-rc3
and their respective stable series.
References
6 totalFrequently asked questions
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What is CVE-2026-98428?
CVE-2026-98428 is a unscored severity Linux kernel vulnerability . CVE-2026-98428 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-98428?
Yes. CVE-2026-98428 has been patched. Fixed versions include 6.1.189, 6.6.158, 6.12.112 and others.
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Is CVE-2026-98428 actively exploited?
No. CVE-2026-98428 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.