CVE-2021-3638
Published: 3 March 2022
An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service.
Notes
| Author | Note |
|---|---|
| mdeslaur | introduced in qemu 4.0 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Released
(1:4.2-3ubuntu6.28)
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(1:6.2+dfsg-2ubuntu6.15)
|
|
| kinetic |
Ignored
(end of life, was deferred)
|
|
| lunar |
Not vulnerable
(1:7.2+dfsg-5ubuntu2.3)
|
|
| mantic |
Not vulnerable
(1:8.0.4+dfsg-1ubuntu3.23.10.1)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
Patches: upstream: https://gitlab.com/qemu-project/qemu/-/commit/205ccfd7a5ec86bd9a5678b8bd157562fc9a1643 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |