CVE-2021-3930
6.5
MEDIUM
CVSS 3.1
EPSS 0.05%
Description
An off-by-one error was found in the SCSI device emulation in QEMU. It could occur while processing MODE SELECT commands in mode_sense_page() if the 'page' argument was set to MODE_PAGE_ALLS (0x3f). A malicious guest could use this flaw to potentially crash QEMU, resulting in a denial of service condition.
How to fix CVE-2021-3930
To remediate CVE-2021-3930, upgrade the affected package to a fixed version below.
- Debian/qemu—upgrade to 1:5.2+dfsg-11+deb11u3 or later
Is CVE-2021-3930 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:5.2+dfsg-11+deb11u3
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 |