cve/2015/CVE-2015-0239.md

CVE-2015-0239

Description

The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction.

POC

Reference

• http://www.openwall.com/lists/oss-security/2015/01/27/6
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• http://www.ubuntu.com/usn/USN-2514-1

Github

No PoCs found on GitHub currently.