CVE-2024-50292

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ASoC: stm32: spdifrx: fix dma channel release in stm32_spdifrx_remove<br /> <br /> In case of error when requesting ctrl_chan DMA channel, ctrl_chan is not<br /> null. So the release of the dma channel leads to the following issue:<br /> [ 4.879000] st,stm32-spdifrx 500d0000.audio-controller:<br /> dma_request_slave_channel error -19<br /> [ 4.888975] Unable to handle kernel NULL pointer dereference<br /> at virtual address 000000000000003d<br /> [...]<br /> [ 5.096577] Call trace:<br /> [ 5.099099] dma_release_channel+0x24/0x100<br /> [ 5.103235] stm32_spdifrx_remove+0x24/0x60 [snd_soc_stm32_spdifrx]<br /> [ 5.109494] stm32_spdifrx_probe+0x320/0x4c4 [snd_soc_stm32_spdifrx]<br /> <br /> To avoid this issue, release channel only if the pointer is valid.