CVE-2025-37790 net: mctp: Set SOCK_RCU_FREE
A use-after-free vulnerability in the Linux kernel's MCTP socket handling allows attackers to cause a denial of service or potentially execute code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-37790?
CVE-2025-37790 is a high-severity use after free vulnerability in Debian Debian Linux, published on 1 May 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:
net: mctp: Set SOCK_RCU_FREE
Bind lookup runs under RCU, so ensure that a socket doesn't go away in the middle of a lookup.
Which versions are affected by CVE-2025-37790?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-37790?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2025-37790 being exploited?
There is no known exploitation of CVE-2025-37790 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2025-37790, DEBIAN-CVE-2025-37790, GHSA-gh7x-chcc-crpq, ROOT-OS-DEBIAN-12-CVE-2025-37790, ROOT-OS-UBUNTU-2204-CVE-2025-37790, ROOT-OS-UBUNTU-2404-CVE-2025-37790 and 1 more.