CVE-2021-47184 i40e: Fix NULL ptr dereference on VSI filter sync
A NULL pointer dereference in the i40e network driver can cause a kernel oops, leading to 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-2021-47184?
CVE-2021-47184 is a high-severity vulnerability in Linux kernel, published on 10 Apr 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:
i40e: Fix NULL ptr dereference on VSI filter sync
Remove the reason of null pointer dereference in sync VSI filters. Added new I40E_VSI_RELEASING flag to signalize deleting and releasing of VSI resources to sync this thread with sync filters subtask. Without this patch it is possible to start update the VSI filter list after VSI is removed, that's causing a kernel oops.
Weakness: CWE-476
Which versions are affected by CVE-2021-47184?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47184?
Apply the vendor's patch.
Is CVE-2021-47184 being exploited?
There is no known exploitation of CVE-2021-47184 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47184, GHSA-f79p-pc32-pmjw, UBUNTU-CVE-2021-47184.