CVE-2020-14364

Name	CVE-2020-14364
Description	An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.
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-2373-1, DSA-4760-1
Debian Bugs	968947

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	Debian Bugs
qemu	source	stretch	1:2.8+dfsg-6+deb9u11	DLA-2373-1
qemu	source	buster	1:3.1+dfsg-8+deb10u8	DSA-4760-1
qemu	source	(unstable)	1:5.1+dfsg-4		968947

Notes

https://xenbits.xen.org/xsa/advisory-335.html
https://www.openwall.com/lists/oss-security/2020/08/24/3
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=b946434f2659a182afc17e155be6791ebfb302eb