Vulnerability Description
A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 guest into accessing sensitive L1 resources that should be inaccessible to the L2 guest.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Enterprise Linux | 7.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1805135Issue TrackingThird Party Advisory
- https://git.kernel.org/linus/07721feee46b4b248402133228235318199b05ecPatchThird Party Advisory
- https://git.kernel.org/linus/35a571346a94fb93b5b3b6a599675ef3384bc75cPatchThird Party Advisory
- https://git.kernel.org/linus/e71237d3ff1abf9f3388337cfebf53b96df2020dPatchThird Party Advisory
- https://linux.oracle.com/errata/ELSA-2020-5540.htmlThird Party Advisory
- https://linux.oracle.com/errata/ELSA-2020-5542.htmlThird Party Advisory
- https://linux.oracle.com/errata/ELSA-2020-5543.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
- https://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
- https://www.debian.org/security/2020/dsa-4667
- https://www.debian.org/security/2020/dsa-4698
- https://www.openwall.com/lists/oss-security/2020/02/25/3Mailing ListThird Party Advisory
- https://www.spinics.net/lists/kvm/msg208259.htmlPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1805135Issue TrackingThird Party Advisory
FAQ
What is CVE-2020-2732?
CVE-2020-2732 is a vulnerability with a CVSS score of 5.8 (MEDIUM). A flaw was discovered in the way that the KVM hypervisor handled instruction emulation for an L2 guest when nested virtualisation is enabled. Under some circumstances, an L2 guest may trick the L0 gue...
How severe is CVE-2020-2732?
CVE-2020-2732 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-2732?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Enterprise Linux.