CVE-2024-50080 ublk: don't allow user copy for unprivileged device
An attacker can exploit unprivileged ublk devices to perform unauthorized user copies, potentially leading to privilege escalation within the Linux kernel.
- 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-2024-50080?
CVE-2024-50080 is a medium-severity vulnerability in Linux kernel, published on 29 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:
ublk: don't allow user copy for unprivileged device
UBLK_F_USER_COPY requires userspace to call write() on ublk char device for filling request buffer, and unprivileged device can't be trusted.
So don't allow user copy for unprivileged device.
Which versions are affected by CVE-2024-50080?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-50080?
Apply the vendor's patch.
Is CVE-2024-50080 being exploited?
There is no known exploitation of CVE-2024-50080 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-51942, BELL-CVE-2024-50080, DEBIAN-CVE-2024-50080, GHSA-4mgj-f599-w3j8, UBUNTU-CVE-2024-50080.