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.
Priority
Medium
CVSS 3 base score: 6.5
Status
| Package | Release | Status |
|---|---|---|
|
qemu Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| focal |
Deferred
(2022-03-28)
|
|
| groovy |
Ignored
(reached end-of-life)
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Deferred
(2022-03-28)
|
|
| jammy |
Deferred
(2022-03-28)
|
|
| trusty |
Not vulnerable
(code not present)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not present)
|
Notes
| Author | Note |
|---|---|
| mdeslaur | introduced in qemu 4.0 as of 2022-03-28, the proposed patch has not been committed into the upstream tree |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3638
- https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg01682.html
- NVD
- Launchpad
- Debian