CVE-2025-39897 net: xilinx: axienet: Add error handling for RX metadata pointer retrieval
A missing error check in the Xilinx AXI Ethernet driver can cause a null pointer dereference, leading to a kernel crash and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-39897?
CVE-2025-39897 is a high-severity vulnerability in Linux kernel, published on 1 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: xilinx: axienet: Add error handling for RX metadata pointer retrieval
Add proper error checking for dmaengine_desc_get_metadata_ptr() which can return an error pointer and lead to potential crashes or undefined behaviour if the pointer retrieval fails.
Properly handle the error by unmapping DMA buffer, freeing the skb and returning early to prevent further processing with invalid data.
Weakness: CWE-476
Which versions are affected by CVE-2025-39897?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-39897?
Apply the vendor's patch.
Is CVE-2025-39897 being exploited?
There is no known exploitation of CVE-2025-39897 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-39897, DEBIAN-CVE-2025-39897, GHSA-rwc6-qv5w-3mrv, ROOT-OS-UBUNTU-2404-CVE-2025-39897, UBUNTU-CVE-2025-39897.