PT-2022-10649 · Qemu+1 · Qemu+1

Mauro Matteo Cascella · Published 2022-08-26 · Updated 2025-02-28 · CVE-2021-3735

Positive Technologies (AI Summary)

CVSS v3.1

4.4

Medium

Base vector

AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions QEMU (affected versions not specified)

Description A deadlock issue was found in the AHCI controller device of QEMU, occurring on a software reset while handling a host-to-device Register FIS packet from the guest. This could allow a privileged user inside the guest to hang the QEMU process on the host, resulting in a denial of service condition. The highest threat from this issue is to system availability.

Recommendations At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

DoS

Improper Locking

Resource Exhaustion

Weakness Enumeration

CWE-667

CWE-400

Related Identifiers

CVE-2021-3735

Affected Products

Debian

Qemu

References · 13

• https://nvd.nist.gov/vuln/detail/CVE-2021-3735 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-3735 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-3735 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-3735 · Security Note
• https://ubuntu.com/security/CVE-2021-3735 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-3735 · Vendor Advisory
• https://osv.dev/vulnerability/BELL-CVE-2021-3735 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-3735 · Vendor Advisory
• https://security.netapp.com/advisory/ntap-20250228-0009 · Note
• https://docs.bell-sw.com/security/cves/CVE-2021-3735 · Note
• https://t.me/cvenotify/112771 · Telegram Post
• https://access.redhat.com/security/cve/CVE-2021-3735 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=1997184 · Note