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CVE-2021-3930

MEDIUM

6.5

CVSS Score

Published: February 18, 2022 at 05:50 PM UTC

Updated: June 17, 2026 at 04:06 AM UTC

10 products affected across 3 vendorsDebian LinuxEnterprise LinuxQEMU

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

95%

v < 6.2.06.2.0-rc0

Affected range stops below 6.2.0, so it looks safe — our inference, not a vendor statement

Codeready Linux Builder · Red Hat

95%

Codeready Linux Builder for IBM Z Systems · Red Hat

95%

Codeready Linux Builder for Power Little Endian · Red Hat

95%

Enterprise Linux · Red Hatrpm

95%

Enterprise Linux Advanced Virtualization Eus · Red Hatrpm

95%

Enterprise Linux for IBM Z Systems · Red Hat

95%

Enterprise Linux for Power Little Endian · Red Hat

95%

OpenStack · Red Hatdrupal

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

x_refsource_MISCIssue TrackingPatchVendor Advisory

Source: [email protected]

https://bugzilla.redhat.com/show_bug.cgi?id=2020588

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html

Vendor Advisoryx_refsource_GENTOOThird Party Advisory

Source: [email protected]

https://security.gentoo.org/glsa/202208-27

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://security.netapp.com/advisory/ntap-20220225-0007/

CVSS

6.5MEDIUM[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: CHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-193

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