CVE-2026-23443

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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 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.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2 Patch
https://git.kernel.org/stable/c/68408e8f9e366ad9850a66ac65cb569f13bf6cd4 Patch
https://git.kernel.org/stable/c/8583f62259e1b315d5239371adfb36939cdab741 Patch
https://git.kernel.org/stable/c/98473309a36acc271009b85e0bb53a4c0dddf5c2 Patch
https://git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25 Patch
https://git.kernel.org/stable/c/e0c470049344e9346fff79d7e2362212c216665e Patch
https://git.kernel.org/stable/c/edf4c2aaee08e8fd503fbae705c801e92a0b55d7 Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.15.202:*:*:*:*:*:*:*
History

23 Apr 2026, 20:58

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:5.15.202:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-476
References () https://git.kernel.org/stable/c/2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2 - () https://git.kernel.org/stable/c/2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2 - Patch
References () https://git.kernel.org/stable/c/68408e8f9e366ad9850a66ac65cb569f13bf6cd4 - () https://git.kernel.org/stable/c/68408e8f9e366ad9850a66ac65cb569f13bf6cd4 - Patch
References () https://git.kernel.org/stable/c/8583f62259e1b315d5239371adfb36939cdab741 - () https://git.kernel.org/stable/c/8583f62259e1b315d5239371adfb36939cdab741 - Patch
References () https://git.kernel.org/stable/c/98473309a36acc271009b85e0bb53a4c0dddf5c2 - () https://git.kernel.org/stable/c/98473309a36acc271009b85e0bb53a4c0dddf5c2 - Patch
References () https://git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25 - () https://git.kernel.org/stable/c/bf504b229cb8d534eccbaeaa23eba34c05131e25 - Patch
References () https://git.kernel.org/stable/c/e0c470049344e9346fff79d7e2362212c216665e - () https://git.kernel.org/stable/c/e0c470049344e9346fff79d7e2362212c216665e - Patch
References () https://git.kernel.org/stable/c/edf4c2aaee08e8fd503fbae705c801e92a0b55d7 - () https://git.kernel.org/stable/c/edf4c2aaee08e8fd503fbae705c801e92a0b55d7 - Patch

18 Apr 2026, 09:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/68408e8f9e366ad9850a66ac65cb569f13bf6cd4 -

03 Apr 2026, 16:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-04-03 16:16

Updated : 2026-04-23 20:58

NVD link : CVE-2026-23443

Mitre link : CVE-2026-23443

CVE.ORG link : CVE-2026-23443

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference