CVE-2023-1390 Denial of service in Linux kernel (TIPC kernel module)
Remote attackers can cause a denial of service by sending specific UDP packets to systems using the TIPC kernel module, leading to 100% CPU utilization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-1390?
CVE-2023-1390 is a high-severity denial of service vulnerability in Linux kernel, published on 16 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-1050
Which versions are affected by CVE-2023-1390?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-1390?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-1390 being exploited?
There is no known exploitation of CVE-2023-1390 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2023-1390, GHSA-875q-9h9j-qhmh, UBUNTU-CVE-2023-1390.