CVE-2024-26994 speakup: Avoid crash on very long word
A local attacker can crash the Linux kernel by triggering a buffer overflow in the speakup module with a long word on a large console.
- 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-2024-26994?
CVE-2024-26994 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 1 May 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:
speakup: Avoid crash on very long word
In case a console is set up really large and contains a really long word (> 256 characters), we have to stop before the length of the word buffer.
Which versions are affected by CVE-2024-26994?
It affects 3 products.
Products include Debian Debian Linux, Fedoraproject Fedora, Linux kernel.
How do I fix CVE-2024-26994?
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-2024-26994 being exploited?
There is no known exploitation of CVE-2024-26994 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2024-26994, DEBIAN-CVE-2024-26994, GHSA-x632-g56x-qcm8, UBUNTU-CVE-2024-26994.