CVE-2018-18718

CVE-2018-18718 affects gThumb up to 3.6.2; a double-free in add_themes_from_dir (dlg-contact-sheet.c) frees the same buffer twice, enabling memory corruption. Patches exist in downstream advisories (e.g., Mageia/MGASA-2019-0039, openSUSE/SU-2019:0022-1, OSV entries) and updated gthumb packages (e...