In the Linux kernel, the following vulnerability has been resolved: spi: ep93xx: fix error pointer deref after DMA setup failure The driver falls back to PIO mode if DMA setup fails during probe. Make sure to the clear the DMA channel pointers on setup failure to avoid dereferencing an error pointer on later probe errors or driver unbind. This issue was flagged by Sashiko when reviewing a devres allocation conversion patch.
https://git.kernel.org/stable/c/b6c0dabea07e25bd7db19a77ebfd0d02b9e2671a
https://git.kernel.org/stable/c/8e027db9fa310b1d5e7ad928510be800c4f004d9
https://git.kernel.org/stable/c/5e121a81667a83e9a01d62b429e340f5a4a84abc
https://git.kernel.org/stable/c/0e2189ab095e3657f37b8295f3f2bbcde0f27529