CVE-2015-0239

Linux Kernel < 3.18.5 - Privilege Escalation via SYSENTER Emulation

Title source: llm
STIX 2.1

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.

References (18)

Core 18
Core References
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2515-1
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2015/dsa-3170
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/72842
Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2015/01/27/6
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1186448
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2514-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2518-1
Release Notes, Vendor Advisory x_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5
Third Party Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
Broken Link mailing-list x_refsource_mlist
http://permalink.gmane.org/gmane.linux.kernel.commits.head/502245
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2517-1
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2516-1
Third Party Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2015-1272.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2513-1

Scores

EPSS 0.0064
EPSS Percentile 46.2%

Details

CWE
CWE-269
Status published
Products (11)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 14.10
debian/debian_linux 7.0
debian/debian_linux 8.0
linux/linux_kernel < 3.18.5
oracle/linux 5
oracle/linux 7
redhat/enterprise_linux_desktop 6.0
redhat/enterprise_linux_server 6.0
... and 1 more
Published Mar 02, 2015
Tracked Since Feb 18, 2026