Copyright © 2012 Red Hat, Inc. All rights reserved. Low 2026-07-15T11:25:51 ImageMagick: ImageMagick: Memory leak in JNG encoder can lead to denial of service 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L CWE-772

ImageMagick before 7.1.2-26 contains a memory leak vulnerability in the JNG encoder when a blob cannot be opened. Attackers can trigger the memory leak by providing malformed JNG files that fail blob operations, causing resource exhaustion.

A flaw was found in ImageMagick. A memory leak vulnerability exists in the JNG (JPEG Network Graphics) encoder when the application fails to open a blob. A remote attacker could exploit this by providing specially crafted malformed JNG files, leading to resource exhaustion and a denial of service (DoS) for the affected system.

Red Hat Enterprise Linux ships ImageMagick in RHEL 6 ELS and RHEL 7 ELS. This flaw has been rated as having a Low security impact and is not currently planned to be addressed in future updates of those products. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/. Do not process untrusted image files with ImageMagick. The JNG coder can be disabled in ImageMagick's policy.xml if not needed: `<policy domain="coder" rights="none" pattern="JNG"/>`. Upgrade to ImageMagick 7.1.2-26 or 6.9.13-51 mitigates the issue. Red Hat Enterprise Linux 6 Fix deferred ImageMagick Red Hat Enterprise Linux 7 Fix deferred ImageMagick https://www.cve.org/CVERecord?id=CVE-2026-61866 https://nvd.nist.gov/vuln/detail/CVE-2026-61866 https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-99w9-hv66-rfv7 https://www.vulncheck.com/advisories/imagemagick-before-26-memory-leak-in-jng-encoder