CVE-2026-23443

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Source
https://cve.org/CVERecord?id=CVE-2026-23443
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23443.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23443
Downstream
Related
Published
2026-04-03T15:15:27.698Z
Modified
2026-06-03T18:29:18.035658857Z
Summary
ACPI: processor: Fix previous acpi_processor_errata_piix4() fix
Details

In the Linux kernel, the following vulnerability has been resolved:

ACPI: processor: Fix previous acpiprocessorerrata_piix4() fix

After commi f132e089fe89 ("ACPI: processor: Fix NULL-pointer dereference in acpiprocessorerrata_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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23443.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
06724a60cfa9767ea90b0f5d3dfb5cdd251b64f5
Fixed
68408e8f9e366ad9850a66ac65cb569f13bf6cd4
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
ad86ac604f8391c0212a91412d4f764c7a85f254
Fixed
2e369ba9eb7b8a06e9cc35a3e7fe73e59272f8c2
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
01e8751b37a366b1ca561add0042f2ceb18c03bf
Fixed
edf4c2aaee08e8fd503fbae705c801e92a0b55d7
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
b803811485ac0b2f774b6bf3abc8b999ba3b7033
Fixed
e0c470049344e9346fff79d7e2362212c216665e
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
29f60d3d06818d40118a30d663231f027ae87a05
Fixed
98473309a36acc271009b85e0bb53a4c0dddf5c2
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0398b641be2b66c2fc7e0163c606ef19372e7ad5
Fixed
8583f62259e1b315d5239371adfb36939cdab741
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
f132e089fe89cadc2098991f0a3cb05c3f824ac6
Fixed
bf504b229cb8d534eccbaeaa23eba34c05131e25

Affected versions

v5.*
v5.15.202
v6.*
v6.1.165
v6.1.166
v6.12.75
v6.12.76
v6.12.77
v6.18.16
v6.18.17
v6.18.18
v6.18.19
v6.19.6
v6.19.7
v6.19.8
v6.19.9
v6.6.128
v6.6.129

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23443.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.15.202
Fixed
5.15.203
Type
ECOSYSTEM
Events
Introduced
6.1.165
Fixed
6.1.167
Type
ECOSYSTEM
Events
Introduced
6.6.128
Fixed
6.6.130
Type
ECOSYSTEM
Events
Introduced
6.12.75
Fixed
6.12.78
Type
ECOSYSTEM
Events
Introduced
6.18.16
Fixed
6.18.20
Type
ECOSYSTEM
Events
Introduced
6.19.6
Fixed
6.19.10

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23443.json"