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In the Linux kernel, the following vulnerability has been resolved:
ACPI: processor: validate MADT IOAPIC entry bounds
The IOAPIC hotplug lookup parses both MADT and _MAT records directly. The MADT walk previously used a subtable's declared length to advance the cursor after only locating a generic header. The _MAT path likewise passed a generic header to the IOAPIC helper.
Validate that a current record has a complete generic header, that its declared length is contained in the available record range, and that a typed IOAPIC record contains the full fixed IOAPIC body before reading its fields. Use the same relation for both MADT and _MAT provider paths.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade bpftool-debuginfoUpgrade kernel-headersUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade bpftoolUpgrade python-perfUpgrade kernelUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade perfUpgrade kernel-tools-debuginfoUpgrade kernel-livepatch-5.15.221-157.262Upgrade kernel-livepatch-5.10.270-271.1109Upgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64 | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-modules-extraUpgrade python3-perf-debuginfoUpgrade kernel-develUpgrade python3-perfUpgrade bpftoolUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade perfUpgrade kernel-livepatch-6.1.188-233.385Upgrade kernelUpgrade perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-debuginfoUpgrade kernel-modules-extra-commonUpgrade kernel-headers | Oct 13, 2026 | Sep 17, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Sep 30, 2026 | Sep 17, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 30, 2026 | Sep 17, 2026 |
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