CVE-2022-49404 RDMA/hfi1: Fix potential integer multiplication overflow errors
An integer overflow in the Linux kernel RDMA driver can lead to incorrect delay calculations, potentially causing unexpected behavior or denial of service.
- 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-2022-49404?
CVE-2022-49404 is a medium-severity vulnerability in Linux kernel, published on 26 Feb 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:
RDMA/hfi1: Fix potential integer multiplication overflow errors
When multiplying of different types, an overflow is possible even when storing the result in a larger type. This is because the conversion is done after the multiplication. So arithmetic overflow and thus in incorrect value is possible.
Correct an instance of this in the inter packet delay calculation. Fix by ensuring one of the operands is u64 which will promote the other to u64 as well ensuring no overflow.
Weakness: CWE-190
Which versions are affected by CVE-2022-49404?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2022-49404?
Apply the vendor's patch.
Is CVE-2022-49404 being exploited?
There is no known exploitation of CVE-2022-49404 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2022-49404, GHSA-wf73-fprx-hxjj, UBUNTU-CVE-2022-49404.