CVE-2023-4194 — Kernel: tap: tap_open(): correctly initialize socket uid next fix of i_uid to current_fsuid
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 o…
Published: 2023-08-07 · CVSS: 5.5 · CVSS 3.1
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: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7