CVE-2023-1390

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.

Score

CVSS 3.1 7.5 High

Status

Modified - secalert@redhat.com

Published

2023-03-16

Last modified

2026-09-18

Weaknesses

CWE-1050

Affected products

• Linux Kernel (Linux)

References

• https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5
• https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6
• https://infosec.exchange/%40_mattata/109427999461122360
• https://security.netapp.com/advisory/ntap-20230420-0001/