Security readout for executives and security teams
CVE-2021-3544 is a QEMU memory-leak issue in the vhost-user-gpu component. Systems running QEMU up to and including 6.0 may gradually waste memory when this device path is used. The business risk is mainly availability on virtualization platforms, not confirmed data theft or remote compromise from the provided sources. Exposure is most likely on virtualization hosts or appliances using QEMU with the virtio vhost-user GPU device. Environments not using vhost-user-gpu appear less exposed, but the supplied sources do not provide deployment conditions, default enablement, or full product mapping. Treat this as a targeted virtualization availability risk. Prioritize systems that host critical workloads and use QEMU vhost-user-gpu. The evidence does not support emergency active-exploitation handling, but unpatched virtualization infrastructure can create operational impact if memory exhaustion occurs. Mitigation focus: Identify QEMU installations at version 6.0 or earlier.; Check whether vhost-user-gpu is enabled or required.; Apply relevant vendor QEMU security updates when available..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupCVE-2021-3544 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=1958935CVE reference · x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20210720-0008/CVE reference · x_refsource_CONFIRM
- DSA-4980CVE reference · vendor-advisory, x_refsource_DEBIAN
- GLSA-202208-27CVE reference · vendor-advisory, x_refsource_GENTOO
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Release of Memory after Effective Lifetime
Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.