Vulnerability Description
An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they will simply not be properly set up, resulting in subsequent grant-related hypercalls hitting BUG() checks. An unprivileged guest can cause a BUG() check in the hypervisor, resulting in a denial-of-service (crash).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | <= 4.11.0 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://xenbits.xen.org/xsa/advisory-268.htmlPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00013.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201810-06Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-268.htmlPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00013.htmlThird Party Advisory
- https://security.gentoo.org/glsa/201810-06Third Party Advisory
FAQ
What is CVE-2018-15469?
CVE-2018-15469 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An issue was discovered in Xen through 4.11.x. ARM never properly implemented grant table v2, either in the hypervisor or in Linux. Unfortunately, an ARM guest can still request v2 grant tables; they ...
How severe is CVE-2018-15469?
CVE-2018-15469 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-15469?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Debian Debian Linux.