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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-2513-1
- http://www.ubuntu.com/usn/USN-2514-1
Github
No PoCs found on GitHub currently.