EUVD-2026-25513
GHSA-jg3h-4jh8-mfwr
CVSS VectorNVD
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
3DescriptionNVD
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usx2y: us144mkii: fix NULL deref on missing interface 0
A malicious USB device with the TASCAM US-144MKII device id can have a configuration containing bInterfaceNumber=1 but no interface 0. USB configuration descriptors are not required to assign interface numbers sequentially, so usb_ifnum_to_if(dev, 0) returns will NULL, which will then be dereferenced directly.
Fix this up by checking the return value properly.
AnalysisAI
Null pointer dereference in the ALSA TASCAM US-144MKII USB audio driver allows local attackers with physical access to a malicious USB device to cause a kernel panic and denial of service. The vulnerability exists because the driver fails to validate that USB interface 0 exists before dereferencing it, and attackers can craft a malicious USB configuration that includes only interface 1, triggering the crash when the device is connected.
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