CVE-2026-89904: Linux

High severity, CVSS 8.4. EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: LoongArch: Fix acpi_package_ids[] array overflow With LoongArch virt machine, a typical setting is one core per socket, there will max 256 sockets (packages) on one VM. With PPTT acpi table, array acpi_package_ids[] will be overflowed. Here change the array size of acpi_package_ids[] with the max value of MAX_PACKAGES and KVM_MAX_VCPUS.

Affected products

• Linux Linux: from 6.12.101, before 6.12.110 (fixed in 6.12.110); from 6.18.42, before 6.18.51 (fixed in 6.18.51); from 7.1.6, before 7.2 (fixed in 7.2); from 7.2, before 7.2.5 (fixed in 7.2.5)

Published 2026-09-16. Last modified 2026-09-16.