CVE-2025-71137 octeontx2-pf: fix "UBSAN: shift-out-of-bounds error"
A local attacker can trigger a shift-out-of-bounds error in the OcteonTX2 driver by setting invalid ring sizes, causing a kernel crash.
- 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-2025-71137?
CVE-2025-71137 is a high-severity vulnerability in Linux kernel, published on 14 Jan 2026. 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:
octeontx2-pf: fix "UBSAN: shift-out-of-bounds error"
This patch ensures that the RX ring size (rx_pending) is not set below the permitted length. This avoids UBSAN shift-out-of-bounds errors when users passes small or zero ring sizes via ethtool -G.
Weakness: CWE-787
Which versions are affected by CVE-2025-71137?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-71137?
Apply the vendor's patch.
Is CVE-2025-71137 being exploited?
There is no known exploitation of CVE-2025-71137 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-71137, DEBIAN-CVE-2025-71137, GHSA-h884-4cqj-w5f7, ROOT-OS-DEBIAN-11-CVE-2025-71137, ROOT-OS-DEBIAN-12-CVE-2025-71137, ROOT-OS-DEBIAN-13-CVE-2025-71137 and 3 more.