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CVE-2021-3930

Date: February 18, 2022

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.

Severity Score

Related Resources (11)

https://bugzilla.redhat.com/show_bug.cgi?id=2020588
https://security-tracker.debian.org/tracker/CVE-2021-3930
https://security.gentoo.org/glsa/202208-27
https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-3930
https://nvd.nist.gov/vuln/detail/CVE-2021-3930
https://security.netapp.com/advisory/ntap-20220225-0007/
https://security.alpinelinux.org/vuln/CVE-2021-3930
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
https://access.redhat.com/security/cve/CVE-2021-3930
https://www.mend.io/vulnerability-database/CVE-2021-3930

Severity Score

Weakness Type (CWE)

Off-by-one Error

CWE-193

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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