CVE-2024-42097 ALSA: emux: improve patch ioctl data validation
Insufficient data validation in ALSA emux patch ioctls allows local attackers to bypass checks, potentially leading to privilege escalation or code execution.
- 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-2024-42097?
CVE-2024-42097 is a high-severity missing authorization vulnerability in Linux kernel, published on 29 Jul 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:
ALSA: emux: improve patch ioctl data validation
In load_data(), make the validation of and skipping over the main info block match that in load_guspatch().
In load_guspatch(), add checking that the specified patch length matches the actually supplied data, like load_data() already did.
Which versions are affected by CVE-2024-42097?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-42097?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2024-42097 being exploited?
There is no known exploitation of CVE-2024-42097 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-42097, DEBIAN-CVE-2024-42097, GHSA-mqp7-v8hg-7qxx, UBUNTU-CVE-2024-42097.