CVE-2026-23443
Vulnerability Description
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.
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.
Vulnerability Details
Published Date
Last Modified
Source
NVD
Vendor
Linux
Product
Linux
External References
- https://git.kernel.org/stable/c/2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2
- https://git.kernel.org/stable/c/8583f62259e1b315d5239371adfb36939cdab741
- https://git.kernel.org/stable/c/98473309a36acc271009b85e0bb53a4c0dddf5c2
- https://git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25
- https://git.kernel.org/stable/c/e0c470049344e9346fff79d7e2362212c216665e
- https://git.kernel.org/stable/c/edf4c2aaee08e8fd503fbae705c801e92a0b55d7
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