Linux Kernel
CVE-2015-0239
MEDIUM
Severity by source
AV:L/AC:M/Au:N/C:P/I:P/A:P
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
AV:L/AC:M/Au:N/C:P/I:P/A:P
Lifecycle Timeline
1DescriptionCVE.org
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.
AnalysisAI
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. Rated medium severity (CVSS 4.4). Public exploit code available.
Technical ContextAI
This vulnerability is classified as Improper Privilege Management (CWE-269), which allows attackers to escalate privileges to gain unauthorized elevated access. 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. Affected products include: Linux Linux Kernel, Canonical Ubuntu Linux, Debian Debian Linux, Oracle Linux, Redhat Enterprise Linux Desktop. Version information: before 3.18.5.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply principle of least privilege, validate privilege transitions, implement proper role separation.
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Same weakness CWE-269 – Improper Privilege Management
View allSame technique Denial Of Service
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External POC / Exploit Code
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