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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | <= 5.2.0 |
| Fedoraproject | Fedora | 33 |
| Redhat | Enterprise Linux | 6.0 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1932827Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202208-27Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0002/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/26/1Mailing ListPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1932827Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00008.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202208-27Third Party Advisory
- https://security.netapp.com/advisory/ntap-20210507-0002/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/02/26/1Mailing ListPatchThird Party Advisory
FAQ
What is CVE-2021-3416?
CVE-2021-3416 is a vulnerability with a CVSS score of 6.0 (MEDIUM). 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 ch...
How severe is CVE-2021-3416?
CVE-2021-3416 has been rated MEDIUM with a CVSS base score of 6.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3416?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Fedoraproject Fedora, Redhat Enterprise Linux, Debian Debian Linux.