In the Linux kernel, the following vulnerability has been resolved: usb: typec: fix potential array underflow in ucsi_ccg_sync_control() The "command" variable can be controlled by the user via debugfs. The worry is that if con_index is zero then "&uc->ucsi->connector[con_index - 1]" would be an array underflow.
https://git.kernel.org/stable/c/ef92cd55289a282910575c5b9d87f646f2d39b38
https://git.kernel.org/stable/c/e56aac6e5a25630645607b6856d4b2a17b2311a5
https://git.kernel.org/stable/c/56971710cd541f2f05160a84b3183477d34a1be9