CVE-2022-49128: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: Add missing pm_runtime_put_sync pm_runtime_get_sync() will increase the rumtime PM counter even when it returns an error. Thus a pairing decrement is needed to prevent refcount leak. Fix this by replacing this API with pm_runtime_resume_and_get(), which will not change the runtime PM counter on error. Besides, a matching decrement is needed on the error handling path to keep the counter balanced.

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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	< 5.15.34
linux	linux_kernel	5.16 — 5.16.20
linux	linux_kernel	5.17 — 5.17.3

References

Advisories & Patches

https://git.kernel.org/stable/c/46f47807738441e354873546dde0b000106c068a https://git.kernel.org/stable/c/792533e54cd6e89191798ccd1abd590c62b9077e https://git.kernel.org/stable/c/9df80dc738926a2ea4bd1ce5993c3d0f4b0e855c https://git.kernel.org/stable/c/ff13c90d7f7ab606b37be6d15140d19013d6736c

Frequently Asked Questions

What is CVE-2022-49128? +

In the Linux kernel, the following vulnerability has been resolved: drm/bridge: Add missing pm_runtime_put_sync pm_runtime_get_sync() will increase the rumtime PM counter even when it returns an error. Thus a pairing decrement is needed to prevent refcount leak. Fix this by replacing this API with pm_runtime_resume_and_get(), which will not change the runtime PM counter on error. Besides, a matching decrement is needed on the error handling path to keep the counter balanced. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49128? +

CVE-2022-49128 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-2022-49128? +

CVE-2022-49128 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-2022-49128? +

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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