CVE-2024-50267 USB: serial: io_edgeport: fix use after free in debug printk
A use-after-free vulnerability in the Linux kernel's io_edgeport USB driver allows attackers to cause a denial of service or potentially execute code via debug logging.
- 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-2024-50267?
CVE-2024-50267 is a high-severity use after free vulnerability in Linux kernel, published on 19 Nov 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:
USB: serial: io_edgeport: fix use after free in debug printk
The "dev_dbg(&urb->dev->dev, ..." which happens after usb_free_urb(urb) is a use after free of the "urb" pointer. Store the "dev" pointer at the start of the function to avoid this issue.
Weakness: CWE-416
Which versions are affected by CVE-2024-50267?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-50267?
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-2024-50267 being exploited?
There is no known exploitation of CVE-2024-50267 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-53721, BELL-CVE-2024-50267, DEBIAN-CVE-2024-50267, GHSA-r2q9-5f64-27vx, UBUNTU-CVE-2024-50267.