In the Linux kernel, the following vulnerability has been resolved:

Input: pegasus-notetaker - fix potential out-of-bounds access

In the pegasusnotetaker driver, the pegasusprobe() function allocates the URB transfer buffer using the wMaxPacketSize value from the endpoint descriptor. An attacker can use a malicious USB descriptor to force the allocation of a very small buffer.

Subsequently, if the device sends an interrupt packet with a specific pattern (e.g., where the first byte is 0x80 or 0x42), the pegasusparsepacket() function parses the packet without checking the allocated buffer size. This leads to an out-of-bounds memory access.