CVE-2017-7493

Name	CVE-2017-7493
Description	Quick Emulator (Qemu) built with the VirtFS, host directory sharing via Plan 9 File System(9pfs) support, is vulnerable to an improper access control issue. It could occur while accessing virtfs metadata files in mapped-file security mode. A guest user could use this flaw to escalate their privileges inside guest.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-1035-1, DLA-1497-1, DLA-965-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
qemu (PTS)	buster	1:3.1+dfsg-8+deb10u8	fixed
	buster (security)	1:3.1+dfsg-8+deb10u10	fixed
	bullseye (security), bullseye	1:5.2+dfsg-11+deb11u2	fixed
	bookworm	1:7.2+dfsg-4	fixed
	sid	1:7.2+dfsg-5	fixed

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

Package	Type	Release	Fixed Version	Origin
qemu	source	wheezy	1.1.2+dfsg-6+deb7u22	DLA-1035-1
qemu	source	jessie	1:2.1+dfsg-12+deb8u7	DLA-1497-1
qemu	source	(unstable)	1:2.8+dfsg-6
qemu-kvm	source	wheezy	1.1.2+dfsg-6+deb7u22	DLA-965-1
qemu-kvm	source	(unstable)	(unfixed)

https://bugzilla.redhat.com/show_bug.cgi?id=1451709
https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg03663.html