medium4.4
CVE-2021-3735
A deadlock issue was found in the AHCI controller device of QEMU.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Qemu | Qemu | Version 6.1.0 |
| Debian | Debian Linux | Versions 10.0, 11.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://access.redhat.com/security/cve/CVE-2021-3735
- https://bugzilla.redhat.com/show_bug.cgi?id=1997184
- https://security-tracker.debian.org/tracker/CVE-2021-3735
- https://access.redhat.com/security/cve/CVE-2021-3735
- https://bugzilla.redhat.com/show_bug.cgi?id=1997184
- https://security-tracker.debian.org/tracker/CVE-2021-3735
- https://security.netapp.com/advisory/ntap-20250228-0009/