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CVE-2016-3157

CVE-2016-3157

EPSS 0.5%
The __switch_to function in arch/x86/kernel/process_64.c in the Linux kernel does not properly context-switch IOPL on 64-bit PV Xen guests, which allows local guest OS users to gain privileges, cause a denial of service (guest OS crash), or obtain sensitive information by leveraging I/O port access.
Affected products
n/a · n/a

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References
http://www.debian.org/security/2016/dsa-3607http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlhttp://www.securityfocus.com/bid/84594http://www.securitytracker.com/id/1035308http://www.ubuntu.com/usn/USN-2968-1http://www.ubuntu.com/usn/USN-2968-2http://www.ubuntu.com/usn/USN-2969-1http://www.ubuntu.com/usn/USN-2970-1http://www.ubuntu.com/usn/USN-2971-1http://www.ubuntu.com/usn/USN-2971-2http://www.ubuntu.com/usn/USN-2971-3http://www.ubuntu.com/usn/USN-2996-1