CVE-2026-23443
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…
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2Patch
- https://git.kernel.org/stable/c/68408e8f9e366ad9850a66ac65cb569f13bf6cd4Patch
- https://git.kernel.org/stable/c/8583f62259e1b315d5239371adfb36939cdab741Patch
- https://git.kernel.org/stable/c/98473309a36acc271009b85e0bb53a4c0dddf5c2Patch
- https://git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25Patch
- https://git.kernel.org/stable/c/e0c470049344e9346fff79d7e2362212c216665ePatch
- https://git.kernel.org/stable/c/edf4c2aaee08e8fd503fbae705c801e92a0b55d7Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.