Vulnerability identifier: #VU65351
Vulnerability risk: Low
Exploitation vector: Local
Exploit availability: No
Vendor: Xen Project
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend. A local user can gain unauthorized access to sensitive information on the system.
Install updates from vendor's website.
Vulnerable software versions
Xen: 4.13.0 - 4.16.1
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.