CVE-2024-47408 net/smc: check smcd_v2_ext_offset when receiving proposal msg
A remote attacker can cause a kernel crash by sending a malicious proposal message with an invalid offset in the Linux kernel's SMC protocol.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-47408?
CVE-2024-47408 is a critical vulnerability in Linux kernel, published on 11 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net/smc: check smcd_v2_ext_offset when receiving proposal msg
When receiving proposal msg in server, the field smcd_v2_ext_offset in proposal msg is from the remote client and can not be fully trusted. Once the value of smcd_v2_ext_offset exceed the max value, there has the chance to access wrong address, and crash may happen.
This patch checks the value of smcd_v2_ext_offset before using it.
Which versions are affected by CVE-2024-47408?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-47408?
Apply the vendor's patch.
Is CVE-2024-47408 being exploited?
There is no known exploitation of CVE-2024-47408 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-47408, DEBIAN-CVE-2024-47408, GHSA-chcg-997c-gc2m, ROOT-OS-DEBIAN-11-CVE-2024-47408, UBUNTU-CVE-2024-47408.