NULL pointer dereference in Xen - CVE-2016-3960

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Main Vulnerability Database Vulnerabilities #VU32303

NULL pointer dereference in Xen - CVE-2016-3960

Published: April 19, 2016 / Updated: July 28, 2020


Vulnerability identifier: #VU32303
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H]
CVE-ID: CVE-2016-3960
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the x86 shadow pagetable code in Xen allows local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping. <a href="http://cwe.mitre.org/data/definitions/476. A remote attacker can perform a denial of service (DoS) attack.


Affected software

Xen
xen (Alpine package)
IBM Systems Director

How to mitigate CVE-2016-3960

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

xen (Alpine package) - update to 4.3.4-r3
IBM Systems Director - update to 6.3.2.2

External References

Related Security Bulletins