CVE-2025-37773 virtiofs: add filesystem context source name check
A null pointer dereference in the Linux kernel virtiofs filesystem can cause a kernel panic, 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-2025-37773?
CVE-2025-37773 is a medium-severity vulnerability in Debian Debian Linux, published on 1 May 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:
virtiofs: add filesystem context source name check
In certain scenarios, for example, during fuzz testing, the source name may be NULL, which could lead to a kernel panic. Therefore, an extra check for the source name should be added.
Which versions are affected by CVE-2025-37773?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-37773?
Apply the vendor's patch.
Is CVE-2025-37773 being exploited?
There is no known exploitation of CVE-2025-37773 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2025-37773, DEBIAN-CVE-2025-37773, GHSA-753r-chc3-hcvj, ROOT-OS-DEBIAN-12-CVE-2025-37773, ROOT-OS-UBUNTU-2204-CVE-2025-37773, ROOT-OS-UBUNTU-2404-CVE-2025-37773 and 1 more.