CVE-2018-10876 Use after free in kernel
A use-after-free in the Linux kernel ext4 filesystem allows attackers to execute code or escalate privileges via a crafted image.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-10876?
CVE-2018-10876 is a medium-severity use after free vulnerability in Canonical Ubuntu Linux, published on 26 Jul 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A flaw was found in Linux kernel in the ext4 filesystem code. A use-after-free is possible in ext4_ext_remove_space() function when mounting and operating a crafted ext4 image.
Weakness: CWE-416
Which versions are affected by CVE-2018-10876?
It affects 3 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel.
How do I fix CVE-2018-10876?
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-2018-10876 being exploited?
There is no known exploitation of CVE-2018-10876 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-10876, GHSA-jw6w-m4jf-m6xp, UBUNTU-CVE-2018-10876.