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.
The product has a loop body or loop condition that contains a control element that directly or indirectly consumes platform resources, e.g. messaging, sessions, locks, or file descriptors.
| Link | Tags |
|---|---|
| https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5 | third party advisory |
| https://infosec.exchange/%40_mattata/109427999461122360 | |
| https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6 | patch vendor advisory |
| https://security.netapp.com/advisory/ntap-20230420-0001/ | third party advisory |