CVE-2021-47141 gve: Add NULL pointer checks when freeing irqs.
A NULL pointer dereference in the gve driver can cause a denial of service when unloading the driver after failed vector allocation.
- 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-2021-47141?
CVE-2021-47141 is a medium-severity vulnerability in Linux kernel, published on 25 Mar 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:
gve: Add NULL pointer checks when freeing irqs.
When freeing notification blocks, we index priv->msix_vectors. If we failed to allocate priv->msix_vectors (see abort_with_msix_vectors) this could lead to a NULL pointer dereference if the driver is unloaded.
Weakness: CWE-476
Which versions are affected by CVE-2021-47141?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2021-47141?
Apply the vendor's patch.
Is CVE-2021-47141 being exploited?
There is no known exploitation of CVE-2021-47141 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as DEBIAN-CVE-2021-47141, GHSA-xv6v-85pc-qw3p, UBUNTU-CVE-2021-47141.