CVE-2011-0491

Name	CVE-2011-0491
Description	The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors, related to "underflow errors."
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-2148-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
tor (PTS)	jessie, jessie (lts)	0.2.5.16-1	fixed
	stretch	0.2.9.16-1	fixed
	stretch (security), stretch (lts)	0.2.9.15-1	fixed
	buster (security), buster, buster (lts)	0.3.5.16-1+deb10u1	fixed
	bullseye (security), bullseye	0.4.5.16-1	fixed
	bookworm (security), bookworm	0.4.7.16-1	fixed
	sid, trixie	0.4.8.13-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
tor	source	lenny	0.2.1.29-1~lenny+1		DSA-2148-1
tor	source	(unstable)	0.2.1.29-1