CVE-2026-64227
ACPI: driver: Check ACPI_COMPANION() against NULL during probe
CVE-2026-64227 is fixed in 74 products on 1 platform, first by DEBIAN-CVE-2026-64227, released July 25, 2026. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.1
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0016
5th percentile
In the Linux kernel, the following vulnerability has been resolved: ACPI: driver: Check ACPI_COMPANION() against NULL during probe Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks against NULL to 13 platform drivers handling core ACPI devices. Also change the value returned by the ACPI thermal zone driver when the device's ACPI companion is not present to -ENODEV for consistency with the other drivers.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.12 · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| bpftool6.18 · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel-livepatch-6.12.100-125.179 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel-livepatch-6.18.41-94.142 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel-uek · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-core · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-core · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-devel · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-devel · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-doc · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-doc · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-tools · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek-tools · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-206.104.3.3.el9uek | ELSA-2026-500248 | Sep 4, 2026 |
| kernel6.12 · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-devel · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-headers · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-tools · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| linux · Debian 13.5 (trixie) | 6.12.100-1 | DEBIAN-CVE-2026-64227 | Jul 25, 2026 |
| linux · Debian 14 | 7.0.12-1 | DEBIAN-CVE-2026-64227 | Jul 25, 2026 |
| linux-6.12 · Debian 12.15 (bookworm) | 6.12.100-1~deb12u1 | DEBIAN-CVE-2026-64227 | Jul 25, 2026 |
| microvm-kernel6.18 · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| perf6.12 · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| python3-perf6.12 · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.100-125.179.amzn2023 | ALAS2023-2026-2057 | Aug 17, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.41-94.142.amzn2023 | ALAS2023-2026-2071 | Aug 31, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.