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.
Affected products
linux: linux kernel
References7
- git.kernel.org/stable/c/2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2 Patch
- git.kernel.org/stable/c/68408e8f9e366ad9850a66ac65cb569f13bf6cd4 Patch
- git.kernel.org/stable/c/8583f62259e1b315d5239371adfb36939cdab741 Patch
- git.kernel.org/stable/c/98473309a36acc271009b85e0bb53a4c0dddf5c2 Patch
- git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25 Patch
- git.kernel.org/stable/c/e0c470049344e9346fff79d7e2362212c216665e Patch
- git.kernel.org/stable/c/edf4c2aaee08e8fd503fbae705c801e92a0b55d7 Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 2 · as of 12 November 2026
- CWE
- CWE-476
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