CVE-2015-0239
MEDIUM severity · CVSS 4.4 · Improper privilege management
4.4CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexity—
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)1%
AV:L/AC:M/Au:N/C:P/I:P/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3747379accba8e95d70cec0eae0582c8c182050
- http://permalink.gmane.org/gmane.linux.kernel.commits.head/502245
- http://rhn.redhat.com/errata/RHSA-2015-1272.htmlAdvisory
- http://www.debian.org/security/2015/dsa-3170Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:058Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlAdvisory
- http://www.openwall.com/lists/oss-security/2015/01/27/6Advisory