UBSAN: array index out of bounds error in prl_fs file.c

After building a stable Linux Kernel release (6.9.12) within Ubuntu 22.04.4. I installed the kernel and restarted Ubuntu. After running dmesg to print out the kernel errors using "sudo dmesg -t -l err" dmesg printed out the following error:

UBSAN: array-index-out-of-bounds in /var/lib/dkms/parallels-tools/19.4.1.54985/build/prl_fs/SharedFolders/Guest/Linux/prl_fs/file.c:244:15
index 1 is out of range for type 'char [1]'

It seems this code is trying to access index value that does not exist.
 
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