An exploitable code execution vulnerability exists in the XCF image rendering functionality of SDL2_image 2.0.4. A specially crafted XCF image can cause a heap overflow, resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0842
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00030.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00029.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00014.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00012.html