CVE-2023-4194

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tunchropen(): correctly initialize socket uid"), - 66b2c338adce ("tap: tapopen(): correctly initialize socket uid"), pass "inode->iuid" to sockinitdata_uid() as the last parameter and that turns out to not be accurate.