CVE-2021-3930

MediumCVSS 6.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

CWE-193

Affected software

Vendor	Product	Versions
n/a	QEMU	qemu-kvm 6.2.0-rc0

References

https://bugzilla.redhat.com/show_bug.cgi?id=2020588Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00002.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202208-27Third Party Advisory
https://security.netapp.com/advisory/ntap-20220225-0007/Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2020588Issue Tracking, Patch, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/04/msg00002.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202208-27Third Party Advisory
https://security.netapp.com/advisory/ntap-20220225-0007/Third Party Advisory

Timeline

Published: Feb 18, 2022
Last modified: Jun 17, 2026
NVD status: Modified

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