CVE-2021-3638
6.5
MEDIUM
CVSS 3.1
EPSS 0.02%
Description
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.
How to fix CVE-2021-3638
To remediate CVE-2021-3638, upgrade the affected package to a fixed version below.
- —upgrade to 1:5.2+dfsg-11+deb11u1 or later
Is CVE-2021-3638 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:5.2+dfsg-11+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |