CVE-2021-3607

Name	CVE-2021-3607
Description	An integer overflow was found in the QEMU implementation of VMWare's paravirtual RDMA device in versions prior to 6.1.0. The issue occurs while handling a "PVRDMA_REG_DSRHIGH" write from the guest due to improper input validation. This flaw allows a privileged guest user to make QEMU allocate a large amount of memory, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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-3099-1
Debian Bugs	990564

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	vulnerable
	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	(not affected)
qemu	source	buster	1:3.1+dfsg-8+deb10u9	DLA-3099-1
qemu	source	(unstable)	1:5.2+dfsg-11		990564

Notes

[stretch] - qemu <not-affected> (Vulnerable code introduced later)
https://bugzilla.redhat.com/show_bug.cgi?id=1973349
upstream commit: https://git.qemu.org/?p=qemu.git;a=commit;h=32e5703cfea07c91e6e84bcb0313f633bb146534