CVE-2022-50628 drm/gud: Fix UBSAN warning

In the Linux kernel, the following vulnerability has been resolved: drm/gud: Fix UBSAN warning UBSAN complains about invalid value for bool: 101.165172 drm Initialized gud 1.0.0 20200422 for 2-3.2:1.0 on minor 1 101.213360 gud 2-3.2:1.0: drm fb1: guddrmfb frame buffer device 101.213426 usbcore:...

CVE-2022-50628

CVE-2022-50628: The issue is a UBSAN warning in the gud driver of the Linux kernel caused by uninitialized iosys_map usage which can load an invalid _Bool value. The fix is to zero the iosys_map variables (in iosys_map_clear called from dma_buf_vmap). Connected sources corroborate that the bug ar...