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CVE-2026-89904

HIGHCVSS 8.4/10

Last modified

CVE-2026-89904 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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..

Description

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.

Metrics

CVSS 3.1
8.4/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= f18992be262d6515c94bf4bf6ce7598135076771, < 0195e04b1eec8fb00e2db9c5e55655a3f5e76f60; >= 4427a33faabb4b81511b99dfee18ce0a38b5b5df, < d3fd094c13c6d0b74f246461ca4cf427d539c8e8; >= 4e8f58620f6717f72f3d88a2c8f25c0c656d0ba7, < 6311b8c471afa33c18adbe4eb16f862936b71ca3; >= 4e8f58620f6717f72f3d88a2c8f25c0c656d0ba7, < 2a2367d46d7a4ee4122b7a86e57125542dbbe963; 496bc868d9066e034787aa14b8ad6c23e77b51ef; >= 6.12.101, < 6.12.110; >= 6.18.42, < 6.18.51; >= 7.1.6, < 7.2
LinuxLinux7.2

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-89904?
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.
How severe is CVE-2026-89904?
CVE-2026-89904 has a CVSS score of 8.4/10 (HIGH severity).
How do I fix CVE-2026-89904?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST