CVE-2023-53657 ice: Don't tx before switchdev is fully configured
A null pointer dereference in the Linux kernel ice driver can cause a denial of service if transmit occurs before switchdev configuration is complete.
- 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-2023-53657?
CVE-2023-53657 is a medium-severity vulnerability in Linux kernel, published on 7 Oct 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:
ice: Don't tx before switchdev is fully configured
There is possibility that ice_eswitch_port_start_xmit might be called while some resources are still not allocated which might cause NULL pointer dereference. Fix this by checking if switchdev configuration was finished.
Weakness: CWE-476
Which versions are affected by CVE-2023-53657?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2023-53657?
Apply the vendor's patch.
Is CVE-2023-53657 being exploited?
There is no known exploitation of CVE-2023-53657 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2023-53657, DEBIAN-CVE-2023-53657, GHSA-3cqg-r9w7-gjfg, ROOT-OS-DEBIAN-11-CVE-2023-53657, ROOT-OS-UBUNTU-2204-CVE-2023-53657, UBUNTU-CVE-2023-53657.