CVE-2023-52340 Denial of service in n/a
An attacker can cause a denial of service by exhausting IPv6 route cache entries via raw sockets, affecting Linux kernel systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-52340?
CVE-2023-52340 is a high-severity denial of service vulnerability in Linux kernel, published on 5 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The IPv6 implementation in the Linux kernel before 6.3 has a net/ipv6/route.c max_size threshold that can be consumed easily, e.g., leading to a denial of service (network is unreachable errors) when IPv6 packets are sent in a loop via a raw socket.
Weakness: CWE-400
Which versions are affected by CVE-2023-52340?
It affects 1 product.
Linux distribution packages (6)
kgraft-patch-SLE12-SP5_Update_53 SUSE:Linux Enterprise Live Patching 12 SP5 | All versions | 3-2.1 |
kernel-livepatch-SLE15-SP2_Update_45 SUSE:Linux Enterprise Live Patching 15 SP2 | All versions | 4-150200.2.1 |
kernel-livepatch-SLE15-SP3_Update_41 SUSE:Linux Enterprise Live Patching 15 SP3 | All versions | 4-150300.2.1 |
kernel-livepatch-SLE15-SP4_Update_23 SUSE:Linux Enterprise Live Patching 15 SP4 | All versions | 2-150400.9.8.1 |
kernel-livepatch-SLE15-SP5-RT_Update_10 SUSE:Linux Enterprise Live Patching 15 SP5 | All versions | 2-150500.11.8.1 |
kernel-livepatch-SLE15-SP5_Update_10 SUSE:Linux Enterprise Live Patching 15 SP5 | All versions | 2-150500.11.8.1 |
Products include Linux kernel.
How do I fix CVE-2023-52340?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2023-52340 being exploited?
There is no known exploitation of CVE-2023-52340 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-43279, BELL-CVE-2023-52340, DEBIAN-CVE-2023-52340, GHSA-7q4j-f74f-6h5j, SUSE-SU-2024:1207-1, SUSE-SU-2024:1273-1 and 3 more.