Vulnerability Monitor

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CVE-2021-3735

A 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.

Published

2022-08-26T16:15:09.467

Last Modified

2025-02-28T13:15:25.767

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.4 (MEDIUM)

Weaknesses

Type: Secondary
CWE-667
Type: Primary
CWE-400
CWE-667

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	qemu	qemu	6.1.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	debian	debian_linux	11.0	Yes

References

https://access.redhat.com/security/cve/CVE-2021-3735 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1997184 Issue Tracking, Third Party Advisory ([email protected])
https://security-tracker.debian.org/tracker/CVE-2021-3735 Third Party Advisory ([email protected])
https://access.redhat.com/security/cve/CVE-2021-3735 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1997184 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security-tracker.debian.org/tracker/CVE-2021-3735 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20250228-0009/ (af854a3a-2127-422b-91ae-364da2661108)