CVE-2021-3713

NameCVE-2021-3713
DescriptionAn out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.
SourceCVE (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)
ReferencesDLA-2753-1, DLA-3099-1, DSA-4980-1
Debian Bugs992727

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
qemu (PTS)buster1:3.1+dfsg-8+deb10u8vulnerable
buster (security)1:3.1+dfsg-8+deb10u9fixed
bullseye (security), bullseye1:5.2+dfsg-11+deb11u2fixed
bookworm, sid1:7.1+dfsg-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusourcestretch1:2.8+dfsg-6+deb9u15DLA-2753-1
qemusourcebuster1:3.1+dfsg-8+deb10u9DLA-3099-1
qemusourcebullseye1:5.2+dfsg-11+deb11u1DSA-4980-1
qemusource(unstable)1:6.1+dfsg-2992727

Notes

https://bugzilla.redhat.com/show_bug.cgi?id=1994640
https://gitlab.com/qemu-project/qemu/-/commit/13b250b12ad3c59114a6a17d59caf073ce45b33a

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