CVE-2021-20203
Published: 25 February 2021
An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
Priority
Status
Package | Release | Status |
---|---|---|
qemu Launchpad, Ubuntu, Debian |
bionic |
Released
(1:2.11+dfsg-1ubuntu7.39)
|
focal |
Released
(1:4.2-3ubuntu6.21)
|
|
groovy |
Ignored
(end of life)
|
|
hirsute |
Ignored
(end of life)
|
|
impish |
Released
(1:6.0+dfsg-2expubuntu1.2)
|
|
jammy |
Released
(1:6.2+dfsg-2ubuntu5)
|
|
kinetic |
Released
(1:6.2+dfsg-2ubuntu5)
|
|
lunar |
Released
(1:6.2+dfsg-2ubuntu5)
|
|
mantic |
Released
(1:6.2+dfsg-2ubuntu5)
|
|
trusty |
Needed
|
|
upstream |
Needs triage
|
|
xenial |
Needed
|
|
Patches: upstream: https://git.qemu.org/?p=qemu.git;a=commit;h=d05dcd94aee88728facafb993c7280547eb4d645 |
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 |