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CVE-2021-47289 Details

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: fix NULL pointer dereference Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e	kernel.org	Patch
https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc	kernel.org	Patch
https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4	kernel.org	Patch
https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4	kernel.org	Patch
https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e	CVE	Patch
https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc	CVE	Patch
https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4	CVE	Patch
https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4	CVE	Patch

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

Product	Versions
linux linux kernel	< 5.4.139 >= 5.5, < 5.10.57 >= 5.11, < 5.13.6 5.14 rc1 5.14 rc2
CPE cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.14:rc1:::::: cpe:2.3:o:linux:linux_kernel:5.14:rc2:::::: Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	kernel.org
Jun 17, 2026	CVE Modified	CISA-ADP
Dec 23, 2024	Initial Analysis	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 28, 2024	CVE Modified	kernel.org
May 21, 2024	New CVE Received	kernel.org