CVE-2022-50480: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: memory: pl353-smc: Fix refcount leak bug in pl353_smc_probe() The break of for_each_available_child_of_node() needs a corresponding of_node_put() when the reference 'child' is not used anymore. Here we do not need to call of_node_put() in fail path as '!match' means no break. While the of_platform_device_create() will created a new reference by 'child' but it has considered the refcounting.

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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

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.0 — 5.4.220
linux	linux_kernel	5.5 — 5.10.150
linux	linux_kernel	5.11 — 5.15.75
linux	linux_kernel	5.16 — 5.19.17
linux	linux_kernel	6.0 — 6.0.3

References

Advisories & Patches

https://git.kernel.org/stable/c/44db35ceb94756ba513dcf6b69bf9e949b28469c https://git.kernel.org/stable/c/49605dc25e7fb33bf8b671279d4468531da90f89 https://git.kernel.org/stable/c/566b143aa5112a0c2784e20603778518bb799537 https://git.kernel.org/stable/c/61b3c876c1cbdb1efd1f52a1f348580e6e14efb6 https://git.kernel.org/stable/c/b37f4a711e5d4bf3608ccbc6de82b52e92b441a0 https://git.kernel.org/stable/c/fde46754d5483bc398018bbec3c8ef5c55219e67

Frequently Asked Questions

What is CVE-2022-50480? +

In the Linux kernel, the following vulnerability has been resolved: memory: pl353-smc: Fix refcount leak bug in pl353_smc_probe() The break of for_each_available_child_of_node() needs a corresponding of_node_put() when the reference 'child' is not used anymore. Here we do not need to call of_node_put() in fail path as '!match' means no break. While the of_platform_device_create() will created a new reference by 'child' but it has considered the refcounting. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50480? +

CVE-2022-50480 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-2022-50480? +

CVE-2022-50480 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-2022-50480? +

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-2022-50480