CVE-2018-19962

Name	CVE-2018-19962
Description	An issue was discovered in Xen through 4.11.x on AMD x86 platforms, possibly allowing guest OS users to gain host OS privileges because small IOMMU mappings are unsafely combined into larger ones.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1949-1, DSA-4369-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	bullseye	4.14.6-1	fixed
	bullseye (security)	4.14.5+94-ge49571868d-1	fixed
	bookworm	4.17.5+23-ga4e5191dc0-1+deb12u1	fixed
	bookworm (security)	4.17.5+23-ga4e5191dc0-1	fixed
	forky, sid, trixie	4.20.0+68-g35cb38b222-1	fixed

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

Package	Type	Release	Fixed Version	Origin
xen	source	jessie	4.4.4lts5-0+deb8u1	DLA-1949-1
xen	source	stretch	4.8.5+shim4.10.2+xsa282-1+deb9u11	DSA-4369-1
xen	source	(unstable)	4.11.1-1

https://xenbits.xen.org/xsa/advisory-275.txt