CVE-2024-42291 ice: Add a per-VF limit on number of FDIR filters
A malicious virtual function driver can exhaust network resources by requesting excessive flow director filters, causing denial of service for other virtual functions.
- 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-2024-42291?
CVE-2024-42291 is a medium-severity denial of service vulnerability in Linux kernel, published on 17 Aug 2024. 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:
ice: Add a per-VF limit on number of FDIR filters
While the iavf driver adds a s/w limit (128) on the number of FDIR filters that the VF can request, a malicious VF driver can request more than that and exhaust the resources for other VFs.
Add a similar limit in ice.
Which versions are affected by CVE-2024-42291?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-42291?
Apply the vendor's patch.
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-2024-42291 being exploited?
There is no known exploitation of CVE-2024-42291 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-42291, DEBIAN-CVE-2024-42291, GHSA-px6m-95hm-g25h, UBUNTU-CVE-2024-42291.