CVE-2025-21774 can: rockchip: rkcanfd_handle_rx_fifo_overflow_int(): bail out if skb cannot be allocated
A missing null check in the Rockchip CAN driver can cause a kernel crash if memory allocation fails, 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-2025-21774?
CVE-2025-21774 is a medium-severity vulnerability in Linux kernel, published on 27 Feb 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:
can: rockchip: rkcanfd_handle_rx_fifo_overflow_int(): bail out if skb cannot be allocated
Fix NULL pointer check in rkcanfd_handle_rx_fifo_overflow_int() to bail out if skb cannot be allocated.
Weakness: CWE-476
Which versions are affected by CVE-2025-21774?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-21774?
Apply the vendor's patch.
Is CVE-2025-21774 being exploited?
There is no known exploitation of CVE-2025-21774 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-21774, DEBIAN-CVE-2025-21774, GHSA-cp4j-vw64-wp3f, UBUNTU-CVE-2025-21774.