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Debian Security Advisory DSA 3390-1 (xen - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
It was discovered that the code to validate level 2 page table entries is bypassed when certain conditions are satisfied. A malicious PV guest administrator can take advantage of this flaw to gain privileges via a crafted superpage mapping.
Affected Software
Affected Software
xen on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the oldstable distribution (wheezy), this problem has been fixed in version 4.1.4-3+deb7u9. For the stable distribution (jessie), this problem has been fixed in version 4.4.1-9+deb8u2. We recommend that you upgrade your xen packages.