CVE-2026-23443
linux: In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Fix previous acpi_processor_err...
CVE-2026-23443 is fixed in 112 products on 1 platform, first by DEBIAN-CVE-2026-23443, released April 3, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0012
2nd percentile
In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Fix previous acpi_processor_errata_piix4() fix After commi f132e089fe89 ("ACPI: processor: Fix NULL-pointer dereference in acpi_processor_errata_piix4()"), device pointers may be dereferenced after dropping references to the device objects pointed to by them, which may cause a use-after-free to occur. Moreover, debug messages about enabling the errata may be printed if the errata flags corresponding to them are unset. Address all of these issues by moving message printing to the points in the code where the errata flags are set.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| bpftool-debuginfo · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| bpftool6.12 · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| bpftool6.12-debuginfo · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| bpftool6.18 · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-64kb · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-azure · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-debuginfo · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-debuginfo-common-aarch64 · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-debuginfo-common-x86_64 · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-default · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-default-base · sles 15.7 | 6.4.0-150700.53.55.1.150700.17.33.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-devel · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-docs · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-headers · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-libbpf · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-libbpf-debuginfo · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-libbpf-devel · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-libbpf-static · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-livepatch-6.1.168-202.320 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-livepatch-6.12.79-101.147 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel-livepatch-6.18.20-20.229 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel-livepatch-SLE15-SP7_Update_15 · sles 15.7 | 1-150700.15.3.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-modules-extra · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-modules-extra-common · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-obs-build · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-source · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-syms · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel-tools · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-tools-debuginfo · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-tools-devel · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| kernel-uek · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-core · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-core · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-devel · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-devel · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-doc · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-doc · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-tools · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek-tools · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-202.76.4.1.el9uek | ELSA-2026-50260 | May 10, 2026 |
| kernel-zfcpdump · sles 15.7 | 6.4.0-150700.53.55.1 | SUSE-SU-2026:2238-1 | Jun 30, 2026 |
| kernel6.12 · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-debuginfo · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-debuginfo-common-aarch64 · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-debuginfo-common-x86_64 · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-devel · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-headers · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-libbpf · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-libbpf-debuginfo · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-libbpf-devel · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-libbpf-static · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-modules-extra · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-modules-extra-common · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-tools · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-tools-debuginfo · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.12-tools-devel · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-libbpf · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-libbpf-debuginfo · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-libbpf-devel · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-libbpf-static · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| linux · Debian 14 | 6.19.10-1 | DEBIAN-CVE-2026-23443 | Apr 3, 2026 |
| perf · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| perf-debuginfo · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| perf6.12 · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| perf6.12-debuginfo · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| python3-perf · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| python3-perf-debuginfo · amzn 2023 | 1:6.1.168-202.320.amzn2023 | ALAS2023-2026-1681 | May 11, 2026 |
| python3-perf6.12 · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| python3-perf6.12-debuginfo · amzn 2023 | 1:6.12.79-101.147.amzn2023 | ALAS2023-2026-1594 | Apr 27, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.20-20.229.amzn2023 | ALAS2023-2026-1596 | Apr 27, 2026 |
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