CVE-2023-6040 Memory corruption in linux
An out-of-bounds access in the Linux kernel netfilter subsystem 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-2023-6040?
CVE-2023-6040 is a high-severity memory corruption vulnerability in Debian Debian Linux, published on 12 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family); While creating a new netfilter table, lack of a safeguard against invalid nf_tables family (pf) values within `nf_tables_newtable` function enables an attacker to achieve out-of-bounds access.
Weakness: CWE-125
Which versions are affected by CVE-2023-6040?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2023-6040?
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-2023-6040 being exploited?
There is no known exploitation of CVE-2023-6040 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-33549, DEBIAN-CVE-2023-6040, GHSA-cw47-8xqr-cfh2, UBUNTU-CVE-2023-6040.