CVE-2021-3735
Published: 26 August 2022
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.
Notes
| Author | Note |
|---|---|
| mdeslaur |
as of 2024-07-18, no details on the issue |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu
Launchpad, Ubuntu, Debian |
bionic |
Deferred
|
| focal |
Deferred
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Deferred
|
|
| kinetic |
Ignored
(end of life, was deferred)
|
|
| lunar |
Ignored
(end of life, was deferred)
|
|
| mantic |
Ignored
(end of life, was deferred)
|
|
| noble |
Deferred
|
|
| trusty |
Deferred
|
|
| upstream |
Needs triage
|
|
| xenial |
Deferred
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.4 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |