CVE-2022-49488

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock is detected<br /> <br /> There is a possibility for mdp5_get_global_state to return<br /> -EDEADLK when acquiring the modeset lock, but currently global_state in<br /> mdp5_mixer_release doesn&amp;#39;t check for if an error is returned.<br /> <br /> To avoid a NULL dereference error, let&amp;#39;s have mdp5_mixer_release<br /> check if an error is returned and propagate that error.<br /> <br /> Patchwork: https://patchwork.freedesktop.org/patch/485181/