In the Linux kernel before 6.5.9, there is a NULL pointer dereference in send_acknowledge in net/nfc/nci/spi.c.
cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5.9
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7937609cd387246aed994e81aa4fa951358fba41
github.com/torvalds/linux/commit/7937609cd387246aed994e81aa4fa951358fba41
lore.kernel.org/netdev/20231013184129.18738-1-krzysztof.kozlowski%40linaro.org/T/#r38bdbaf8ae15305b77f6c5bc8e15d38f405623c7