漏洞类别：Ubuntu
洞等级： 
漏洞信息
It was discovered that the compression handling code in the Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel did not properly check for an integer overflow.
It was discovered that memory manager in the Linux kernel did not properly handle anonymous pages.
It was discovered that the Linux kernel did not properly suppress hugetlbfs support in X86 paravirtualized guests.
It was discovered that the keyring interface in the Linux kernel contained a buffer overflow when displaying timeout events via the /proc/keys interface.
漏洞危害
A local attacker could use this to cause a denial of service (system crash). (CVE-2014-9904)
A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2015-3288)
An attacker in the guest OS could cause a denial of service (guest system crash). (CVE-2016-3961)
A local attacker could use this to cause a denial of service (system crash). (CVE-2016-7042)
解决方案
Refer to Ubuntu advisory USN-3127-1 for affected packages and patching details, or update with your package manager.
Patch:
Following are links for downloading patches to fix the vulnerabilities:
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-powerpc-smp)
USN-3127-1: 14.04 (Kylin) on src (linux-image-virtual)
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-powerpc-e500mc)
USN-3127-1: 14.04 (Kylin) on src (linux-image-lowlatency)
USN-3127-1: 14.04 (Kylin) on src (linux-image-powerpc-e500)
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-lowlatency)
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-powerpc64-emb)
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-generic-lpae)
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-generic)
USN-3127-1: 14.04 (Kylin) on src (linux-image-powerpc-smp)
USN-3127-1: 14.04 (Kylin) on src (linux-image-generic)
USN-3127-1: 14.04 (Kylin) on src (linux-image-powerpc64-smp)
USN-3127-1: 14.04 (Kylin) on src (linux-image-powerpc-e500mc)
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-powerpc64-smp)
USN-3127-1: 14.04 (Kylin) on src (linux-image-3.13.0-101-powerpc-e500)
USN-3127-1: 14.04 (Kylin) on src (linux-image-generic-lpae)
USN-3127-1: 14.04 (Kylin) on src (linux-image-powerpc64-emb)
0day
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