media: atomisp: ssh_css: Fix a null-pointer dereference in load_video_binaries

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: media: atomisp: ssh_css: Fix a null-pointer dereference in load_video_binaries The allocation failure of mycs->yuv_scaler_binary in load_video_binaries() is followed with a dereference of mycs->yuv_scaler_binary after the following call chain: sh_css_pipe_load_binaries() |-> load_video_binaries(mycs->yuv_scaler_binary == NULL) | |-> sh_css_pipe_unload_binaries() |-> unload_video_binaries() In unload_video_binaries(), it calls to ia_css_binary_unload with argument &pipe->pipe_settings.video.yuv_scaler_binary[i], which refers to the same memory slot as mycs->yuv_scaler_binary. Thus, a null-pointer dereference is triggered.

References

• https://git.kernel.org/stable/c/51b8dc5163d2ff2bf04019f8bf7e3bd0e75bb654
• https://git.kernel.org/stable/c/4b68b861b514a5c09220d622ac3784c0ebac6c80
• https://git.kernel.org/stable/c/82c2c85aead3ea3cbceef4be077cf459c5df2272
• https://git.kernel.org/stable/c/a1ab99dcc8604afe7e3bccb01b10da03bdd7ea35
• https://git.kernel.org/stable/c/cc20c87b04db86c8e3e810bcdca686b406206069
• https://git.kernel.org/stable/c/69b27ff82f87379afeaaea4b2f339032fdd8486e
• https://git.kernel.org/stable/c/6482c433863b257b0b9b687c28ce80b89d5f89f0
• https://git.kernel.org/stable/c/3b621e9e9e148c0928ab109ac3d4b81487469acb