In the Linux kernel, the following vulnerability has been resolved: spi: spi-imx: Add check for spiimxsetupxfer() Add check for the return value of spiimxsetupxfer(). spiimx->rx and spiimx->tx function pointer can be NULL when spiimxsetupxfer() return error, and make NULL pointer dereference. Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 Call trace: 0x0 spiimxpiotransfer+0x50/0xd8 spiimxtransferone+0x18c/0x858 spitransferonemessage+0x43c/0x790 _spipumptransfermessage+0x238/0x5d4 _spisync+0x2b0/0x454 spiwritethenread+0x11c/0x200
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