In ImageMagick, there is an outside the range of representable values of type 'unsigned char' at coders/pdf.c.
Name: Suhwan Song (Seoul National University)
In RestoreMSCWarning() of /coders/pdf.c there are several areas where calls to GetPixelIndex() could result in values outside the range of representable for the unsigned char type. The patch casts the return value of GetPixelIndex() to ssize_t type to avoid this bug. This undefined behavior could be triggered when ImageMagick processes a crafted pdf file. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was demonstrated in this case.
Created ImageMagick tracking bugs for this issue:
Affects: epel-8 [bug 1901287]
Affects: fedora-all [bug 1901288]
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):
This flaw is out of support scope for Red Hat Enterprise Linux 5, 6, and 7. Inkscape is not affected because it no longer uses a bundled ImageMagick in Red Hat Enterprise Linux 8. For more information regarding support scopes, please see https://access.redhat.com/support/policy/updates/errata .
Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was demonstrated in this case.