CVE-2020-14394
Published: 17 August 2022
An infinite loop flaw was found in the USB xHCI controller emulation of QEMU while computing the length of the Transfer Request Block (TRB) Ring. This flaw allows a privileged guest user to hang the QEMU process on the host, resulting in a denial of service.
Notes
Author | Note |
---|---|
mdeslaur |
impact is limited, a privileged guest user can only use this issue to perform a denial of service to their own instance |
Priority
Status
Package | Release | Status |
---|---|---|
qemu
Launchpad, Ubuntu, Debian |
bionic |
Needed
|
focal |
Released
(1:4.2-3ubuntu6.28)
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Ignored
(end of life)
|
|
impish |
Ignored
(end of life)
|
|
jammy |
Released
(1:6.2+dfsg-2ubuntu6.16)
|
|
kinetic |
Ignored
(end of life, was needed)
|
|
lunar |
Not vulnerable
(1:7.2+dfsg-5ubuntu2.2)
|
|
mantic |
Not vulnerable
(1:7.2+dfsg-5ubuntu3)
|
|
noble |
Not vulnerable
(1:7.2+dfsg-5ubuntu3)
|
|
trusty |
Needed
|
|
upstream |
Needs triage
|
|
xenial |
Needed
|
|
Patches:
other: https://lore.kernel.org/qemu-devel/20220802134834.454749-1-thuth@redhat.com/ upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=effaf5a240e03020f4ae953e10b764622c3e87cc upstream: https://gitlab.com/qemu-project/qemu/-/commit/effaf5a240e03020f4ae953e10b764622c3e87cc |
||
qemu-kvm
Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
focal |
Does not exist
|
|
groovy |
Does not exist
|
|
hirsute |
Does not exist
|
|
impish |
Does not exist
|
|
jammy |
Does not exist
|
|
kinetic |
Does not exist
|
|
lunar |
Does not exist
|
|
mantic |
Does not exist
|
|
noble |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Needs triage
|
|
xenial |
Does not exist
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 3.2 |
Attack vector | Local |
Attack complexity | Low |
Privileges required | High |
User interaction | None |
Scope | Changed |
Confidentiality | None |
Integrity impact | None |
Availability impact | Low |
Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L |