CVE-2020-27761

WritePALMImage() in /coders/palm.c used size_t casts in several areas of a calculation which could lead to values outside the range of representable type `unsigned long` undefined behavior when a crafted input file was processed by ImageMagick. The patch casts to `ssize_t` instead to avoid this issue. Red Hat Product Security marked the Severity as Low because although it could potentially lead to an impact to application availability, no specific impact was shown in this case. This flaw affects ImageMagick versions prior to ImageMagick 7.0.9-0.

• CWE-190
• CWE-190

• https://bugzilla.redhat.com/show_bug.cgi?id=1894679Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/03/msg00030.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html
• https://bugzilla.redhat.com/show_bug.cgi?id=1894679Issue Tracking, Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2021/03/msg00030.htmlMailing List, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2023/03/msg00008.html

Published

Dec 3, 2020

Last Modified

Jun 17, 2026

Status

Modified

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