CVE-2018-12617

Name	CVE-2018-12617
Description	qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.
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-1694-1, DSA-4454-1
Debian Bugs	902725

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, sid	1:7.2+dfsg-7	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
qemu	source	jessie	1:2.1+dfsg-12+deb8u10		DLA-1694-1
qemu	source	stretch	1:2.8+dfsg-6+deb9u6		DSA-4454-1
qemu	source	(unstable)	1:3.1+dfsg-1	low		902725

Notes

https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6
https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html
Fixed by: https://git.qemu.org/?p=qemu.git;a=commit;h=141b197408ab398c4f474ac1a728ab316e921f2b