CVE-2006-0459

Name	CVE-2006-0459
Description	flex.skl in Will Estes and John Millaway Fast Lexical Analyzer Generator (flex) before 2.5.33 does not allocate enough memory for grammars containing (1) REJECT statements or (2) trailing context rules, which causes flex to generate code that contains a buffer overflow that might allow context-dependent attackers to execute arbitrary code.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-1020-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
flex (PTS)	jessie, jessie (lts)	2.5.39-8+deb8u2	fixed
	stretch	2.6.1-1.3	fixed
	buster	2.6.4-6.2	fixed
	bullseye	2.6.4-8	fixed
	sid, trixie, bookworm	2.6.4-8.2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
flex	source	sarge	2.5.31-31sarge1		DSA-1020-1
flex	source	(unstable)	2.5.33-1