漏洞类别：Ubuntu
漏洞等级： 
漏洞信息
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).
解决方案
Refer to Ubuntu advisory USN-3128-1 for affected packages and patching details, or update with your package manager.
Patch:
Following are links for downloading patches to fix the vulnerabilities:
USN-3128-1: 16.04 (Xenial) on src (linux-image-4.4.0-47-powerpc64-emb)
USN-3128-1: 16.04 (Xenial) on src (linux-image-4.4.0-47-powerpc-smp)
USN-3128-1: 16.04 (Xenial) on src (linux-image-powerpc-e500mc)
USN-3128-1: 16.04 (Xenial) on src (linux-image-powerpc-smp)
USN-3128-1: 16.04 (Xenial) on src (linux-image-4.4.0-47-lowlatency)
USN-3128-1: 16.04 (Xenial) on src (linux-image-4.4.0-47-powerpc64-smp)
USN-3128-1: 16.04 (Xenial) on src (linux-image-4.4.0-47-generic-lpae)
USN-3128-1: 16.04 (Xenial) on src (linux-image-4.4.0-47-generic)
USN-3128-1: 16.04 (Xenial) on src (linux-image-powerpc64-smp)
USN-3128-1: 16.04 (Xenial) on src (linux-image-generic-lpae)
USN-3128-1: 16.04 (Xenial) on src (linux-image-powerpc64-emb)
USN-3128-1: 16.04 (Xenial) on src (linux-image-generic)
USN-3128-1: 16.04 (Xenial) on src (linux-image-4.4.0-47-powerpc-e500mc)
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