A vulnerability has been reported in Xen, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or potentially bypass certain security restrictions.
The vulnerability is caused due to an error when processing the "flask_op" hypercall. This can be exploited by DomU users to cause a heap-based buffer overflow and execute arbitrary code with Dom0 privileges.
Successful exploitation requires that Xen is compiled with support for the "XSM:FLASK" module.
The vulnerability is reported in version 3.3. Other versions may also be affected.
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
information to firstname.lastname@example.org