Denial of service in Xen - CVE-2018-19961

Vulnerability identifier: #VU16002

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2018-19961

CWE-ID: CWE-264

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

Vendor: Xen Project

Affected software:
Xen

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The weakness exists due to insufficient TLB flushing after improper large page mappings with AMD IOMMUs. An adjacent attacker can cause the service to crash.

Install update from vendor's website.

• http://xenbits.xen.org/xsa/advisory-275.html