CVE-2026-98428ALSA: usb: 6fire: Avoid embedded URBs
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 14, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 8b8559aeaba2e51cfee1779b2383b085991f7d81; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 52a43c2d57e774489ac3fbbac06ff02f19bd9a52; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 999f433c09e4668412bd68ca207ae2b4af863862; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d181434549b3da668110a25d743848cce9897f4e; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9fe49dbc023e82dfaee7b245997d820d01742a9a; before 6.1.189; before 6.6.158; and 3 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/3ef9093d83ffecb8e5f6c9d5769a52d39df74f7a
- https://git.kernel.org/stable/c/8b8559aeaba2e51cfee1779b2383b085991f7d81
- https://git.kernel.org/stable/c/52a43c2d57e774489ac3fbbac06ff02f19bd9a52
- https://git.kernel.org/stable/c/999f433c09e4668412bd68ca207ae2b4af863862
- https://git.kernel.org/stable/c/d181434549b3da668110a25d743848cce9897f4e
- https://git.kernel.org/stable/c/9fe49dbc023e82dfaee7b245997d820d01742a9a
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.