CVE-2024-40999 net: ena: Add validation for completion descriptors consistency
A missing validation in the Linux kernel ENA network driver allows invalid completion descriptors to trigger a device reset, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-40999?
CVE-2024-40999 is a critical denial of service vulnerability in Linux kernel, published on 12 Jul 2024. 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: ena: Add validation for completion descriptors consistency
Validate that `first` flag is set only for the first descriptor in multi-buffer packets. In case of an invalid descriptor, a reset will occur. A new reset reason for RX data corruption has been added.
Which versions are affected by CVE-2024-40999?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-40999?
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-2024-40999 being exploited?
There is no known exploitation of CVE-2024-40999 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-62592, AZL-68252, BELL-CVE-2024-40999, DEBIAN-CVE-2024-40999, GHSA-525f-9j8j-prj4, ROOT-OS-DEBIAN-11-CVE-2024-40999 and 3 more.