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Status published
Medium
CVE-2021-3416
A potential stack overflow via infinite loop issue was found...
Vulnerability Description
A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1932827
- https://www.openwall.com/lists/oss-security/2021/02/26/1
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html
- https://security.netapp.com/advisory/ntap-20210507-0002/
- https://security.gentoo.org/glsa/202208-27
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html
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Affected Vendor
Affected Software
QEMU
Vulnerable Versions:
versions up to and including 5.2.0
Timeline
Official Publish:
March 18th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H