CVE-2024-38614 openrisc: traps: Don't send signals to kernel mode threads
A bug in OpenRISC trap handling could send signals to kernel threads, causing a system crash; attackers can trigger this to deny service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-38614?
CVE-2024-38614 is a high-severity denial of service vulnerability in Linux kernel, published on 19 Jun 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
openrisc: traps: Don't send signals to kernel mode threads
OpenRISC exception handling sends signals to user processes on floating point exceptions and trap instructions (for debugging) among others. There is a bug where the trap handling logic may send signals to kernel threads, we should not send these signals to kernel threads, if that happens we treat it as an error.
This patch adds conditions to die if the kernel receives these exceptions in kernel mode code.
Which versions are affected by CVE-2024-38614?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-38614?
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-2024-38614 being exploited?
There is no known exploitation of CVE-2024-38614 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-38614, DEBIAN-CVE-2024-38614, GHSA-q47h-3hgq-6c3p, UBUNTU-CVE-2024-38614.