Description

In the Linux kernel, the following vulnerability has been resolved: mtd: rawnand: cadence: fix DMA device NULL pointer dereference The DMA device pointer `dma_dev` was being dereferenced before ensuring that `cdns_ctrl->dmac` is properly initialized. Move the assignment of `dma_dev` after successfully acquiring the DMA channel to ensure the pointer is valid before use.

References 7

• git.kernel.org https://git.kernel.org/stable/c/0c2a43cb43786011b48eeab6093db14888258c6b
• git.kernel.org https://git.kernel.org/stable/c/0c635241a62f2f5da1b48bfffae226d1f86a76ef
• git.kernel.org https://git.kernel.org/stable/c/2178b0255eae108bb10e5e99658b28641bc06f43
• git.kernel.org https://git.kernel.org/stable/c/5c56bf214af85ca042bf97f8584aab2151035840
• git.kernel.org https://git.kernel.org/stable/c/9c58c64ec41290c12490ca7e1df45013fbbb41fd
• git.kernel.org https://git.kernel.org/stable/c/b146e0b085d9d6bfe838e0a15481cba7d093c67f
• git.kernel.org https://git.kernel.org/stable/c/e282a4fdf3c6ee842a720010a8b5f7d77bedd126

Remediation