Bug 2439855 (CVE-2026-23131)

Summary: CVE-2026-23131 kernel: platform/x86: hp-bioscfg: Fix kobject warnings for empty attribute names
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2026-02-14 16:01:55 UTC 
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.
Comment 1 Alexander B 2026-02-16 09:55:22 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026021411-CVE-2026-23131-6201@gregkh/T