CVE-2022-2085 Information

Description

A NULL pointer dereference vulnerability was found in Ghostscript which occurs when it tries to render a large number of bits in memory. When allocating a buffer device it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp > 64 mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel) which triggers a NULL pointer dereference flaw causing an application to crash.

Reference

https://bugs.ghostscript.com/show_bug.cgi?id=704945 http://git.ghostscript.com/?p=ghostpdl.git;h=ae1061d948d88667bdf51d47d918c4684d0f67df https://bugzilla.redhat.com/show_bug.cgi?id=2095261