ACK: [SRU][N][PATCH v2 0/1] CVE-2025-37801

[Tim Whisonant]

On Thu, Oct 16, 2025 at 02:53:14PM +0200, Alessio Faina wrote:
> https://ubuntu.com/security/CVE-2025-37801
> 
> [ Impact ]
> 
> spi: spi-imx: Add check for spi_imx_setupxfer()
> 
> Add check for the return value of spi_imx_setupxfer().
> spi_imx->rx and spi_imx->tx function pointer can be NULL when
> spi_imx_setupxfer() return error, and make NULL pointer dereference.
> 
>  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
>  Call trace:
>   0x0
>   spi_imx_pio_transfer+0x50/0xd8
>   spi_imx_transfer_one+0x18c/0x858
>   spi_transfer_one_message+0x43c/0x790
>   __spi_pump_transfer_message+0x238/0x5d4
>   __spi_sync+0x2b0/0x454
>   spi_write_then_read+0x11c/0x200
> 
> [ Fix ]
> 
> Introduce a check for the spi_imx_setupxfer function; if the function
> failed to setup the transfer, exit and do not use a potential NULL pointer.
> 
> [ Test Plan ]
> 
> Compiled and boot tested only.
> 
> [ Regression Potential ]
> 
> No regression potential, introducing only a NULL pointer check.
> 
> v2: Fixed the "cherry pick" tag in patch 1/1
> 
> Tamura Dai (1):
>   spi: spi-imx: Add check for spi_imx_setupxfer()
> 
>  drivers/spi/spi-imx.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> -- 
> 2.43.0
> 

Acked-by: Tim Whisonant <tim.whisonant at canonical.com>