CVE-2026-89436 platform/x86: panasonic-laptop: Fix sentinel write past pcc->sinf[]

In the Linux kernel, the following vulnerability has been resolved: platform/x86: panasonic-laptop: Fix sentinel write past pcc-sinf acpipccretrievebiosdata rejects SINF packages only when pcc-numsifr is strictly less than hkey-package.count, then unconditionally writes a trailing sentinel at...

The vulnerability of the acpi_pcc_hotkey_add() function in the Linux operating system allows a hacker to compromise the confidentiality, integrity, and accessibility of the protected information.

The vulnerability of the acpipcchotkeyadd function in the Linux kernel’s drivers/platform/x86/panasonic-laptop.c module is related to incorrect calculation of the index. Exploiting this vulnerability could allow an attacker to compromise the confidentiality, integrity, and accessibility of the...