CVE-2026-23131 platform/x86: hp-bioscfg: Fix kobject warnings for empty attribute names
A flaw in the HP BIOS configuration driver causes kernel warnings and potential instability when processing empty attribute names, requiring a patch.
- 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-2026-23131?
CVE-2026-23131 is a medium-severity denial of service vulnerability in Linux kernel, published on 14 Feb 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:
platform/x86: hp-bioscfg: Fix kobject warnings for empty attribute names
The hp-bioscfg driver attempts to register kobjects with empty names when the HP BIOS returns attributes with empty name strings. This causes multiple kernel warnings:
kobject: (00000000135fb5e6): attempted to be registered with empty name! WARNING: CPU: 14 PID: 3336 at lib/kobject.c:219 kobject_add_internal+0x2eb/0x310
Add validation in hp_init_bios_buffer_attribute() to check if the attribute name is empty after parsing it from the WMI buffer. If empty, log a debug message and skip registration of that attribute, allowing the module to continue processing other valid attributes.
Which versions are affected by CVE-2026-23131?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23131?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-23131 being exploited?
There is no known exploitation of CVE-2026-23131 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23131, DEBIAN-CVE-2026-23131, GHSA-fxmr-wvvq-356h, ROOT-OS-UBUNTU-2404-CVE-2026-23131, UBUNTU-CVE-2026-23131.