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 2024-02-19, no details on the issue |
Priority
Status
Package | Release | Status |
---|---|---|
qemu Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
hirsute |
Ignored
(end of life)
|
|
impish |
Ignored
(end of life)
|
|
bionic |
Deferred
(2024-02-19)
|
|
focal |
Deferred
(2024-02-19)
|
|
jammy |
Deferred
(2024-02-19)
|
|
kinetic |
Ignored
(end of life, was deferred [2024-02-19])
|
|
lunar |
Ignored
(end of life, was deferred [2024-02-19])
|
|
trusty |
Deferred
(2024-02-19)
|
|
mantic |
Deferred
(2024-02-19)
|
|
xenial |
Deferred
(2024-02-19)
|
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 |