Usbtmc driver Bug Fix

CVE-2022-48834

What is CVE-2022-48834?

A vulnerability exists in the usbtmc driver of the Linux kernel, where the usbtmc_ioctl_request() function incorrectly uses usb_rcvctrlpipe() for all transfers, regardless of their direction. This misconfiguration leads to a mismatch in the expected control transfer direction, potentially resulting in unexpected behavior during USB communications. The issue was reported by the syzbot fuzzer, highlighting a need for a fix to correct the handling of control transfers to ensure proper operation and prevent potential disruptions in device communication.

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References