CVE-2023-2598 Memory corruption in Kernel
A flaw in Linux kernel io_uring buffer registration allows out-of-bounds memory access, enabling local privilege escalation.
- 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-2023-2598?
CVE-2023-2598 is a high-severity memory corruption vulnerability in Linux kernel, published on 1 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw was found in the fixed buffer registration code for io_uring (io_sqe_buffer_register in io_uring/rsrc.c) in the Linux kernel that allows out-of-bounds access to physical memory beyond the end of the buffer. This flaw enables full local privilege escalation.
Which versions are affected by CVE-2023-2598?
It affects 2 products.
Products include Linux kernel, Netapp Hci Baseboard Management Controller.
How do I fix CVE-2023-2598?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-2598 being exploited?
There is no known exploitation of CVE-2023-2598 in the wild and no public exploit code.
Public exploit code: 4 proofs of concept on GitHub.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-27061, GHSA-mmvq-3rp7-6cw4, UBUNTU-CVE-2023-2598.