dmaengine: altera-msgdma: properly free descriptor in msgdma_free_descriptor

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: altera-msgdma: properly free descriptor in msgdma_free_descriptor Remove list_del call in msgdma_chan_desc_cleanup, this should be the role of msgdma_free_descriptor. In consequence replace list_add_tail with list_move_tail in msgdma_free_descriptor. This fixes the path: msgdma_free_chan_resources -> msgdma_free_descriptors -> msgdma_free_desc_list -> msgdma_free_descriptor which does not correctly free the descriptors as first nodes were not removed from the list.

References

• https://git.kernel.org/stable/c/a3480e59fdbe5585d2d1eff0bed7671583acf725
• https://git.kernel.org/stable/c/20bf2920a869f9dbda0ef8c94c87d1901a64a716
• https://git.kernel.org/stable/c/db67686676c7becc1910bf1d6d51505876821863
• https://git.kernel.org/stable/c/54e4ada1a4206f878e345ae01cf37347d803d1b1