CVE-2022-49746 Information

Description

In the Linux kernel the following vulnerability has been resolved:

dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init

If the function sdma_load_context() fails the sdma_desc will be freed but the allocated desc->bd is forgot to be freed.

We already met the sdma_load_context() failure case and the log as below: [ 450.699064] imx-sdma 30bd0000.dma-controller: Timeout waiting for CH0 ready …

In this case the desc->bd will not be freed without this change.

Reference

https://git.kernel.org/stable/c/1417f59ac0b02130ee56c0c50794b9b257be3d17 https://git.kernel.org/stable/c/43acd767bd90c5d4172ce7fee5d9007a9a08dea9 https://git.kernel.org/stable/c/80ee99e52936b2c04cc37b17a14b2ae2f9d282ac https://git.kernel.org/stable/c/bd0050b7ffa87c7b260d563646af612f4112a778 https://git.kernel.org/stable/c/ce4745a6b8016fae74c95dcd457d4ceef7d98af1 https://git.kernel.org/stable/c/dbe634ce824329d8f14079c3e9f8f11670894bec