A flaw was found in mupdf 1.18.0. Double free of object during linearization may lead to memory corruption and other potential consequences.
git.ghostscript.com/?p=mupdf.git%3Bh=cee7cefc610d42fd383b3c80c12cbc675443176a
lists.debian.org/debian-lts-announce/2021/03/msg00012.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCADE3VSPWCGTE5BV4KL273R5VK3GDKM/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M44PNYCBL33OD7GC75XNE6CDS4VSGVWO/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLC6MPH7YS6JPU427XOFRLF3KKZQUZJN/
security.gentoo.org/glsa/202105-30