Mend Vulnerability Database

Vulnerability DatabaseCVE-2015-0239

CVE-2015-0239

Published:March 02, 2015

Updated:May 17, 2026

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.

Related Resources (21)

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5

https://github.com/torvalds/linux/commit/f3747379accba8e95d70cec0eae0582c8c182050

http://www.ubuntu.com/usn/USN-2515-1

https://bugzilla.redhat.com/show_bug.cgi?id=1186448

http://rhn.redhat.com/errata/RHSA-2015-1272.html

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3747379accba8e95d70cec0eae0582c8c182050

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

https://people.canonical.com/~ubuntu-security/cve/CVE-2015-0239

http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html

https://security-tracker.debian.org/tracker/CVE-2015-0239

http://permalink.gmane.org/gmane.linux.kernel.commits.head/502245