CVE-2015-0239
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.64% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 50.6% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2015-03-02 11:00Z11 YR AGO
- Last updated
- 2024-08-06 04:03Z2 YR AGO
- Reserved
- 2014-11-18
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 7182ec281b5d2da611d560e37b7d4b753c46d7995d72a1235450c6a0d9dd0c3d
05 Affected products
06 References
- www.ubuntu.comUSN-2515-1http://www.ubuntu.com/usn/USN-2515-1
- www.debian.orgDSA-3170http://www.debian.org/security/2015/dsa-3170
- www.securityfocus.com72842http://www.securityfocus.com/bid/72842
- www.openwall.com[oss-security] 20150127 KVM SYSENTER emulation vulnerability - CVE-2015-0239http://www.openwall.com/lists/oss-security/2015/01/27/6
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1186448
- git.kernel.orghttp://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f3747379accba8e95d70cec0eae0582c8c182050
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- github.comhttps://github.com/torvalds/linux/commit/f3747379accba8e95d70cec0eae0582c8c182050
- www.ubuntu.comUSN-2514-1http://www.ubuntu.com/usn/USN-2514-1
- www.ubuntu.comUSN-2518-1http://www.ubuntu.com/usn/USN-2518-1
- www.oracle.comhttp://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- www.kernel.orghttp://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.5
- www.mandriva.comMDVSA-2015:058http://www.mandriva.com/security/advisories?name=MDVSA-2015:058
- permalink.gmane.org[bk-commits-head] 20150123 KVM: x86: SYSENTER emulation is brokenhttp://permalink.gmane.org/gmane.linux.kernel.commits.head/502245
- www.ubuntu.comUSN-2517-1http://www.ubuntu.com/usn/USN-2517-1
- www.ubuntu.comUSN-2516-1http://www.ubuntu.com/usn/USN-2516-1
- rhn.redhat.comRHSA-2015:1272http://rhn.redhat.com/errata/RHSA-2015-1272.html
- www.ubuntu.comUSN-2513-1http://www.ubuntu.com/usn/USN-2513-1
07 Fixed in
Debian 12
- linux Fixed in 3.16.7-ckt4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- linux Fixed in 3.16.7-ckt4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- linux Fixed in 3.16.7-ckt4-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- linux Fixed in 3.13.0-46.75
- linux-lts-utopic Fixed in 3.16.0-31.41~14.04.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.