漏洞类别：Ubuntu
漏洞等级： 
漏洞信息
It was discovered that the Xen netback driver in the Linux kernel did not properly perform input validation in some situations.
漏洞危害
An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
解决方案
Refer to Ubuntu advisory USN-3819-1 for affected packages and patching details, or update with your package manager.
Patch:
Following are links for downloading patches to fix the vulnerabilities:
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-11-generic-lpae)
USN-3819-1: 18.10 (cosmic) on src (linux-image-snapdragon)
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-11-generic)
USN-3819-1: 18.10 (cosmic) on src (linux-image-generic)
USN-3819-1: 18.10 (cosmic) on src (linux-image-generic-lpae)
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-1004-kvm)
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-11-lowlatency)
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-1004-aws)
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-1003-gcp)
USN-3819-1: 18.10 (cosmic) on src (linux-image-kvm)
USN-3819-1: 18.10 (cosmic) on src (linux-image-aws)
USN-3819-1: 18.10 (cosmic) on src (linux-image-raspi2)
USN-3819-1: 18.10 (cosmic) on src (linux-image-gke)
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-11-snapdragon)
USN-3819-1: 18.10 (cosmic) on src (linux-image-4.18.0-1006-raspi2)
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