The XEN_DOMCTL_getmemlist hypercall in Xen 3.4.x through 4.3.x (possibly 4.3.1) does not always obtain the page_alloc_lock and mm_rwlock in the same order, which allows local guest administrators to cause a denial of service (host deadlock).
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.openwall.com/lists/oss-security/2013/11/26/8 | mailing list |
| http://security.gentoo.org/glsa/glsa-201407-03.xml | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00010.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html | vendor advisory |
| http://www.debian.org/security/2014/dsa-3006 | vendor advisory |
| http://lists.opensuse.org/opensuse-updates/2013-12/msg00059.html | vendor advisory |