CVE-2023-53179 netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
A missing macro in the Linux kernel ipset module causes integer underflow and slab out-of-bound access, potentially allowing local attackers to 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-2023-53179?
CVE-2023-53179 is a high-severity vulnerability in Linux kernel, published on 15 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
The missing IP_SET_HASH_WITH_NET0 macro in ip_set_hash_netportnet can lead to the use of wrong `CIDR_POS(c)` for calculating array offsets, which can lead to integer underflow. As a result, it leads to slab out-of-bound access. This patch adds back the IP_SET_HASH_WITH_NET0 macro to ip_set_hash_netportnet to address the issue.
Weakness: CWE-787
Which versions are affected by CVE-2023-53179?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53179?
Apply the vendor's patch.
Is CVE-2023-53179 being exploited?
There is no known exploitation of CVE-2023-53179 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-53179, DEBIAN-CVE-2023-53179, GHSA-95q3-rgv7-prpr, UBUNTU-CVE-2023-53179.