CVE-2023-1390 Information

Description

A remote denial of service vulnerability was found in the Linux kernel’s TIPC kernel module. The while loop in tipc_link_xmit() hits an unknown state while attempting to parse SKBs which are not in the queue. Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization for the system to instantly spike to 100% causing a denial of service condition.

Reference

https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6 https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5 https://infosec.exchange/@_mattata/109427999461122360