A guest started with Populated on Demand enabled (PoD) can attempt to reclaim pages which aren't regular guest RAM. This can cause corruption of memory management state in Xen.
https://xenbits.xenproject.org/xsa/advisory-507.html
http://xenbits.xen.org/xsa/advisory-507.html
http://www.openwall.com/lists/oss-security/2026/07/28/23
Source: Mitre, NVD
Published: 2026-07-28
Updated: 2026-07-28
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
Severity: Medium
Base Score: 5.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L