Medium severity · published Feb 18, 2022
CVE-2021-3930
An off-by-one error was found in the SCSI device emulation in QEMU
6.5
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CL
Codeready Linux Builder · Redhat
8.0 · source: NVD
CL
Codeready Linux Builder For Ibm Z Systems · Redhat
8.0 · source: NVD
CL
Codeready Linux Builder For Power Little Endian · Redhat
8.0 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
EL
Enterprise Linux Advanced Virtualization Eus · Redhat
8.4 · source: NVD
EL
Enterprise Linux For Ibm Z Systems · Redhat
8.0 · source: NVD
EL
Enterprise Linux For Power Little Endian · Redhat
8.0 · source: NVD
OP
Openstack · Redhat
10; 13 · source: NVD
QE
Qemu · Qemu
before 6.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3930
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3930
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2020588
Mailing List
https://lists.debian.org/debian-lts-announce/2022/04/msg00002.html
Mailing List
https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
Third Party Advisory
https://security.gentoo.org/glsa/202208-27
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220225-0007/
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