CVE-2026-89436

CVE-2026-89436 is an out-of-bounds write in the Linux kernel's panasonic-laptop driver (platform/x86). In acpi_pcc_retrieve_biosdata(), a trailing sentinel is written at pcc->sinf[hkey->package.count], but when a DSDT's SINF package count equals SQTY+1 (a known off-by-one hardware quirk han...