CVE-2021-3735

NameCVE-2021-3735
DescriptionA deadlock issue was found in the AHCI controller device of QEMU. It occurs on a software reset (ahci_reset_port) while handling a host-to-device Register FIS (Frame Information Structure) packet from the guest. A privileged user inside the guest could use this flaw to hang the QEMU process on the host, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.
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)
Debian Bugs1014767

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+deb10u9vulnerable
bullseye (security), bullseye1:5.2+dfsg-11+deb11u2vulnerable
bookworm, sid1:7.1+dfsg-2vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
qemusource(unstable)(unfixed)1014767

Notes

[bullseye] - qemu <no-dsa> (Minor issue)
[buster] - qemu <postponed> (Minor issue, waiting for patch)
https://bugzilla.redhat.com/show_bug.cgi?id=1997184
No upstream patch as of 2022-11-08

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