CVE-2021-3582

Name	CVE-2021-3582
Description	A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. The issue occurs while handling a "PVRDMA_CMD_CREATE_MR" command due to improper memory remapping (mremap). This flaw allows a malicious guest to crash the QEMU process on the host. 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	990565

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, sid	1:7.2+dfsg-7	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		990565

Notes

[stretch] - qemu <not-affected> (Vulnerable code introduced later)
https://lists.nongnu.org/archive/html/qemu-devel/2021-06/msg04148.html
Upstream commit: https://git.qemu.org/?p=qemu.git;a=commit;h=284f191b4abad213aed04cb0458e1600fd18d7c4