Vulnerability Details CVE-2026-31620
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 4.6%
CVSS Severity
CVSS v3 Score 4.6
References
Products affected by CVE-2026-31620
-
cpe:2.3:o:linux:linux_kernel:6.18
-
cpe:2.3:o:linux:linux_kernel:6.18.1
-
cpe:2.3:o:linux:linux_kernel:6.18.10
-
cpe:2.3:o:linux:linux_kernel:6.18.11
-
cpe:2.3:o:linux:linux_kernel:6.18.13
-
cpe:2.3:o:linux:linux_kernel:6.18.14
-
cpe:2.3:o:linux:linux_kernel:6.18.16
-
cpe:2.3:o:linux:linux_kernel:6.18.17
-
cpe:2.3:o:linux:linux_kernel:6.18.18
-
cpe:2.3:o:linux:linux_kernel:6.18.19
-
cpe:2.3:o:linux:linux_kernel:6.18.2
-
cpe:2.3:o:linux:linux_kernel:6.18.20
-
cpe:2.3:o:linux:linux_kernel:6.18.21
-
cpe:2.3:o:linux:linux_kernel:6.18.22
-
cpe:2.3:o:linux:linux_kernel:6.18.23
-
cpe:2.3:o:linux:linux_kernel:6.18.3
-
cpe:2.3:o:linux:linux_kernel:6.18.4
-
cpe:2.3:o:linux:linux_kernel:6.18.5
-
cpe:2.3:o:linux:linux_kernel:6.18.6
-
cpe:2.3:o:linux:linux_kernel:6.18.7
-
cpe:2.3:o:linux:linux_kernel:6.18.8
-
cpe:2.3:o:linux:linux_kernel:6.18.9
-
cpe:2.3:o:linux:linux_kernel:6.19
-
cpe:2.3:o:linux:linux_kernel:6.19.1
-
cpe:2.3:o:linux:linux_kernel:6.19.10
-
cpe:2.3:o:linux:linux_kernel:6.19.11
-
cpe:2.3:o:linux:linux_kernel:6.19.13
-
cpe:2.3:o:linux:linux_kernel:6.19.3
-
cpe:2.3:o:linux:linux_kernel:6.19.4
-
cpe:2.3:o:linux:linux_kernel:6.19.6
-
cpe:2.3:o:linux:linux_kernel:6.19.7
-
cpe:2.3:o:linux:linux_kernel:6.19.8
-
cpe:2.3:o:linux:linux_kernel:6.19.9
-
cpe:2.3:o:linux:linux_kernel:7.0