CVE-2017-10921

Name	CVE-2017-10921
Description	The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a denial of service (count mismanagement and memory corruption) or obtain privileged host OS access, aka XSA-224 bug 2.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-1132-1, DSA-3969-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	buster, buster (security)	4.11.4+107-gef32c7afa2-1	fixed
	bullseye, bullseye (security)	4.14.5+94-ge49571868d-1	fixed
	bookworm	4.17.1+2-gb773c48e36-1	fixed
	sid, trixie	4.17.2-1	fixed

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

Package	Type	Release	Fixed Version	Origin
xen	source	wheezy	4.1.6.lts1-9	DLA-1132-1
xen	source	jessie	4.4.1-9+deb8u10	DSA-3969-1
xen	source	stretch	4.8.1-1+deb9u3	DSA-3969-1
xen	source	(unstable)	4.8.1-1+deb9u3

https://xenbits.xen.org/xsa/advisory-224.html