CVE-2017-17821

Name	CVE-2017-17821
Description	WTF/wtf/FastBitVector.h in WebKit, as distributed in Safari Technology Preview Release 46, allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because it calls the FastBitVectorWordOwner::resizeSlow function (in WTF/wtf/FastBitVector.cpp) for a purpose other than initializing a bitvector size, and resizeSlow mishandles cases where the old array length is greater than the new array length.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, 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
webkit2gtk (PTS)	jessie	2.6.2+dfsg1-4	vulnerable
	stretch	2.18.6-1~deb9u1	vulnerable
	buster (security), buster, buster (lts)	2.38.6-0+deb10u1	fixed
	bullseye	2.44.2-1~deb11u1	fixed
	bullseye (security)	2.46.4-1~deb11u1	fixed
	bookworm	2.46.0-2~deb12u1	fixed
	bookworm (security)	2.46.4-1~deb12u1	fixed
	trixie	2.46.4-1	fixed
	sid	2.46.5-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
webkit2gtk	source	(unstable)	2.22.0-2	unimportant

https://bugs.webkit.org/show_bug.cgi?id=181020 (not public)
Not covered by security support