CVEvulnerability
CVE-2021-3735
4.4 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2022-08-26
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.4 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400, CWE-667
Description
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.
Affected configurations
• qemu qemu 6.1.0
• debian debian linux 10.0
• debian debian linux 11.0
Related
References
- https://access.redhat.com/security/cve/CVE-2021-3735 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1997184 Issue Tracking, Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2021-3735 Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2021-3735 Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1997184 Issue Tracking, Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2021-3735 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20250228-0009/ security.netapp.com