CVE-2023-45898 Use after free in n/a
A use-after-free vulnerability in the Linux kernel's ext4 filesystem allows attackers to potentially execute code 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-2023-45898?
CVE-2023-45898 is a high-severity use after free vulnerability in Linux kernel, published on 16 Oct 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Linux kernel before 6.5.4 has an es1 use-after-free in fs/ext4/extents_status.c, related to ext4_es_insert_extent.
Weakness: CWE-416
Which versions are affected by CVE-2023-45898?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-45898?
Upgrade to a fixed version.
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-2023-45898 being exploited?
There is no known exploitation of CVE-2023-45898 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-31566, BELL-CVE-2023-45898, DEBIAN-CVE-2023-45898, GHSA-3x3x-vjcr-56cc, UBUNTU-CVE-2023-45898.