QEMU
At a glance
- Source
- NVD
- EPSS
- EPSS 0.46 % · percentile 40 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-835 — Loop with Unreachable Exit Condition
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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.0 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-26744
- GCVE · GCVE-0-2021-3416
CERT-FR advisories
- CERTFR-2021-AVI-485 — Multiples vulnérabilités dans Citrix Hypervisor · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*≤ 5.2.0cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| QEMU | affected versions up to and including 5.2.0 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |