CVE-2024-56777 drm/sti: avoid potential dereference of error pointers in sti_gdp_atomic_check

In the Linux kernel, the following vulnerability has been resolved: drm/sti: avoid potential dereference of error pointers in stigdpatomiccheck The return value of drmatomicgetcrtcstate needs to be checked. To avoid use of error pointer 'crtcstate' in case of the failure...

CVE-2024-56777

CVE-2024-56777 affects the Linux kernel DRM STI path. The vulnerability arises because the return value of drm_atomic_get_crtc_state() is not checked before dereferencing the potential error pointer crtc_state in sti_gdp_atomic_check, which can lead to an invalid memory access if the call fails. ...