Ubuntu.comUB:CVE-2020-14394CVE-2020-14394
3.2 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
1.4 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
MULTIPLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:M/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
19.3%
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.
Bugs
- <https://bugzilla.redhat.com/show_bug.cgi?id=1908004>
- <https://gitlab.com/qemu-project/qemu/-/issues/646>
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 |
Related
3.2 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:L
1.4 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
MULTIPLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:M/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
19.3%