CVE-2020-25725

Name	CVE-2020-25725
Description	In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an `heap-use-after-free` problem. The codes of a previous fix for nested Type 3 characters wasn't correctly handling the case where a Type 3 char referred to another char in the same Type 3 font.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xpdf (PTS)	bullseye	3.04+git20210103-3	fixed
	bookworm	3.04+git20220601-1	fixed
	forky, sid, trixie	3.04+git20250304-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
xpdf	source	(unstable)	(not affected)

- xpdf <not-affected> (Debian uses poppler, which is not affected)
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915