CVE-2022-2085: 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. Patch: http://git.ghostscript.com/?p=ghostpdl.git;h=ae1061d948d88667bdf51d47d918c4684d0f67df
We should backport the patch, 9.56.1 is completely useless.
GLSA request filed
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/data/glsa.git/commit/?id=ae2df9a36eb30967fc9dd392f63bc7af60249272 commit ae2df9a36eb30967fc9dd392f63bc7af60249272 Author: GLSAMaker <glsamaker@gentoo.org> AuthorDate: 2022-11-22 03:53:57 +0000 Commit: John Helmert III <ajak@gentoo.org> CommitDate: 2022-11-22 03:59:40 +0000 [ GLSA 202211-11 ] GPL Ghostscript: Multiple Vulnerabilities Bug: https://bugs.gentoo.org/812509 Bug: https://bugs.gentoo.org/852944 Signed-off-by: GLSAMaker <glsamaker@gentoo.org> Signed-off-by: John Helmert III <ajak@gentoo.org> glsa-202211-11.xml | 44 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+)
GLSA released, waiting for cleanup
