CVSS 3.1
6.5 mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HCVE-2021-3930
Medium (6.5). EPSS 0.3% chance of exploitation in the next 30 days.
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
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
- CWE
- CWE-193
- Published
- Modified
- Record from
- the NVD, synced
Affected
- debian:debian_linux
- qemu:qemu
- redhat:codeready_linux_builder
- redhat:codeready_linux_builder_for_ibm_z_systems
- redhat:codeready_linux_builder_for_power_little_endian
- redhat:enterprise_linux
- redhat:enterprise_linux_advanced_virtualization_eus
- redhat:enterprise_linux_for_ibm_z_systems
- redhat:enterprise_linux_for_power_little_endian
- redhat:openstack