CVE-2022-3238 Use after free in Kernel
A local attacker can trigger a double-free in the Linux kernel NTFS3 subsystem to crash the system or escalate privileges.
- 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-2022-3238?
CVE-2022-3238 is a high-severity use after free vulnerability in Linux kernel, published on 14 Nov 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A double-free flaw was found in the Linux kernel’s NTFS3 subsystem in how a user triggers remount and umount simultaneously. This flaw allows a local user to crash or potentially escalate their privileges on the system.
Which versions are affected by CVE-2022-3238?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-3238?
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-2022-3238 being exploited?
There is no known exploitation of CVE-2022-3238 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-3238, GHSA-vrr6-jm4r-hqvp, ROOT-OS-DEBIAN-12-CVE-2022-3238, ROOT-OS-DEBIAN-13-CVE-2022-3238, ROOT-OS-UBUNTU-2204-CVE-2022-3238, ROOT-OS-UBUNTU-2404-CVE-2022-3238 and 1 more.