CVE-2020-36781 Information

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.

Reference

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