CVE-2021-47425

MEDIUM
Published May 21, 2024 Modified Sep 23, 2025 CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: acpi: fix resource leak in reconfiguration device addition acpi_i2c_find_adapter_by_handle() calls bus_find_device() which takes a reference on the adapter which is never released which will result in a reference count leak and render the adapter unremovable. Make sure to put the adapter after creating the client in the same manner that we do for OF. [wsa: fixed title]

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CVSS v3.1 Score

5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-401 CWE-401

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/3d9d458a8aaafa47268ea4f1b4114a9f12927989 https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95 https://git.kernel.org/stable/c/3d9d458a8aaafa47268ea4f1b4114a9f12927989 https://git.kernel.org/stable/c/60bacf259e8c2eb2324f3e13275200baaee9494b https://git.kernel.org/stable/c/6558b646ce1c2a872fe1c2c7cb116f05a2c1950f https://git.kernel.org/stable/c/90f1077c9184ec2ae9989e4642f211263f301694 https://git.kernel.org/stable/c/b8090a84d7758b929d348bafbd86bb7a10c5fb63 https://git.kernel.org/stable/c/f86de018fd7a24ee07372d55ffa7824f0c674a95

Frequently Asked Questions

What is CVE-2021-47425? +
In the Linux kernel, the following vulnerability has been resolved: i2c: acpi: fix resource leak in reconfiguration device addition acpi_i2c_find_adapter_by_handle() calls bus_find_device() which takes a reference on the adapter which is never released which will result in a reference count leak and render the adapter unremovable. Make sure to put the adapter after creating the client in the same manner that we do for OF. [wsa: fixed title] It has a CVSS v3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2021-47425? +
CVE-2021-47425 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.
What products are affected by CVE-2021-47425? +
CVE-2021-47425 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2021-47425? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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