Debian Security Bug TrackerDEBIANCVE:CVE-2021-20196CVE-2021-20196
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
22.2%
A NULL pointer dereference flaw was found in the floppy disk emulator of QEMU. This issue occurs while processing read/write ioport commands if the selected floppy drive is not initialized with a block device. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | qemu | < 1:6.2+dfsg-1 | qemu_1:6.2+dfsg-1_all.deb |
| Debian | 11 | all | qemu | < 1:5.2+dfsg-11+deb11u3 | qemu_1:5.2+dfsg-11+deb11u3_all.deb |
| Debian | 10 | all | qemu | < 1:3.1+dfsg-8+deb10u9 | qemu_1:3.1+dfsg-8+deb10u9_all.deb |
| Debian | 999 | all | qemu | < 1:6.2+dfsg-1 | qemu_1:6.2+dfsg-1_all.deb |
| Debian | 13 | all | qemu | < 1:6.2+dfsg-1 | qemu_1:6.2+dfsg-1_all.deb |
Related
6.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
2.1 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
22.2%