Vulnerability in Qemu
CVE-2021-3930
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…
EPSS: 0.003 (24.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Qemu
- Debian Debian_linux — versions 9.0, 10.0
- Redhat Codeready_linux_builder — versions 8.0
- Redhat Codeready_linux_builder_for_ibm_z_systems — versions 8.0
- Redhat Codeready_linux_builder_for_power_little_endian — versions 8.0
- Redhat Enterprise_linux — versions 8.0
- Redhat Enterprise_linux_advanced_virtualization_eus — versions 8.4
- Redhat Enterprise_linux_for_ibm_z_systems — versions 8.0
- Redhat Enterprise_linux_for_power_little_endian — versions 8.0
- Redhat Openstack — versions 10, 13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-3930?
- CVE-2021-3930 is a medium-severity vulnerability in Qemu, classified under Off-by-one Error. CVSS score: 6.5/10. Published 2022-02-18.
- How severe is CVE-2021-3930?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-3930 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.