CVE-2020-36781: linux kernel — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: imx: fix reference leak when pm_runtime_get_sync fails In i2c_imx_xfer() and i2c_imx_remove(), the pm reference count is not expected to be incremented on return. However, pm_runtime_get_sync will increment pm reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage 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	5.7 — 5.10.37
linux	linux_kernel	5.11 — 5.11.21
linux	linux_kernel	5.12 — 5.12.4

References

Advisories & Patches

https://git.kernel.org/stable/c/1ecc0ebc2ebbad4a22a670a07d27a21fa0b59c77 https://git.kernel.org/stable/c/3a0cdd336d92c429b51a79bf4f64b17eafa0325d https://git.kernel.org/stable/c/47ff617217ca6a13194fcb35c6c3a0c57c080693 https://git.kernel.org/stable/c/ff406f6cd09c273337ab4854292e4aca48f8affd https://git.kernel.org/stable/c/1ecc0ebc2ebbad4a22a670a07d27a21fa0b59c77 https://git.kernel.org/stable/c/3a0cdd336d92c429b51a79bf4f64b17eafa0325d https://git.kernel.org/stable/c/47ff617217ca6a13194fcb35c6c3a0c57c080693 https://git.kernel.org/stable/c/ff406f6cd09c273337ab4854292e4aca48f8affd

Frequently Asked Questions

What is CVE-2020-36781? +

In the Linux kernel, the following vulnerability has been resolved: i2c: imx: fix reference leak when pm_runtime_get_sync fails In i2c_imx_xfer() and i2c_imx_remove(), the pm reference count is not expected to be incremented on return. However, pm_runtime_get_sync will increment pm reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2020-36781? +

CVE-2020-36781 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-2020-36781? +

CVE-2020-36781 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-2020-36781? +

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-2020-36781