CVE-2023-54105: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: can: isotp: check CAN address family in isotp_bind() Add missing check to block non-AF_CAN binds. Syzbot created some code which matched the right sockaddr struct size but used AF_XDP (0x2C) instead of AF_CAN (0x1D) in the address family field: bind$xdp(r2, &(0x7f0000000540)={0x2c, 0x0, r4, 0x0, r2}, 0x10) ^^^^ This has no funtional impact but the userspace should be notified about the wrong address family field content.

Affected products

• Linux Linux: from 5.10, before 5.10.200 (fixed in 5.10.200); from 5.11, before 5.15.138 (fixed in 5.15.138); from 5.16, before 6.1.16 (fixed in 6.1.16); from 6.2, before 6.2.3 (fixed in 6.2.3)

Published 2025-12-24. Last modified 2026-06-17.