CVE-2024-49925 fbdev: efifb: Register sysfs groups through driver core
A use-after-free race condition in the Linux kernel efifb driver allows attackers to potentially execute code or escalate privileges via sysfs attributes.
- 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-2024-49925?
CVE-2024-49925 is a high-severity use after free vulnerability in Linux kernel, published on 21 Oct 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:
fbdev: efifb: Register sysfs groups through driver core
The driver core can register and cleanup sysfs groups already. Make use of that functionality to simplify the error handling and cleanup.
Also avoid a UAF race during unregistering where the sysctl attributes were usable after the info struct was freed.
Weakness: CWE-416
Which versions are affected by CVE-2024-49925?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-49925?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2024-49925 being exploited?
There is no known exploitation of CVE-2024-49925 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-53022, BELL-CVE-2024-49925, DEBIAN-CVE-2024-49925, GHSA-h7r9-ffqq-5r47, ROOT-OS-DEBIAN-11-CVE-2024-49925, UBUNTU-CVE-2024-49925.