CVE-2021-47158: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: net: dsa: sja1105: add error handling in sja1105_setup() If any of sja1105_static_config_load(), sja1105_clocking_setup() or sja1105_devlink_setup() fails, we can't just return in the middle of sja1105_setup() or memory will leak. Add a cleanup path.

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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	Versions
linux	linux_kernel	5.2 — 5.10.42
linux	linux_kernel	5.11 — 5.12.9
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/987e4ab8b8a4fcbf783069e03e7524cd39ffd563 https://git.kernel.org/stable/c/cec279a898a3b004411682f212215ccaea1cd0fb https://git.kernel.org/stable/c/dd8609f203448ca6d58ae71461208b3f6b0329b0 https://git.kernel.org/stable/c/987e4ab8b8a4fcbf783069e03e7524cd39ffd563 https://git.kernel.org/stable/c/cec279a898a3b004411682f212215ccaea1cd0fb https://git.kernel.org/stable/c/dd8609f203448ca6d58ae71461208b3f6b0329b0

Frequently Asked Questions

What is CVE-2021-47158? +

In the Linux kernel, the following vulnerability has been resolved: net: dsa: sja1105: add error handling in sja1105_setup() If any of sja1105_static_config_load(), sja1105_clocking_setup() or sja1105_devlink_setup() fails, we can't just return in the middle of sja1105_setup() or memory will leak. Add a cleanup path. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-47158? +

CVE-2021-47158 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-2021-47158? +

CVE-2021-47158 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-2021-47158? +

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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CVE-2021-47158