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.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | Linux kernel (TIPC kernel module) | Fixed in kernel 5.11-rc4 |
References
- https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5Third Party Advisory
- https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6Patch, Vendor Advisory
- https://infosec.exchange/%40_mattata/109427999461122360
- https://security.netapp.com/advisory/ntap-20230420-0001/Third Party Advisory
- https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5Third Party Advisory
- https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6Patch, Vendor Advisory
- https://infosec.exchange/%40_mattata/109427999461122360
- https://security.netapp.com/advisory/ntap-20230420-0001/Third Party Advisory
Timeline
- Published
- Mar 16, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified