CVE-2017-1000252 Ubuntu Security Notification for Linux, Linux-raspi2 Vulnerabilities (USN-3468-1)

2017年11月6日 1011点热度 0人点赞 0条评论

漏洞类别：Ubuntu

漏洞等级：

漏洞信息

It was discovered that the KVM subsystem in the Linux kernel did not properly bound guest IRQs.

It was discovered that the Flash-Friendly File System (f2fs) implementation in the Linux kernel did not properly validate superblock metadata.

It was discovered that the Xen virtual block driver did not properly initialize some data structures before passing them to user space.

It was discovered that a use-after-free vulnerability existed in the POSIX message queue implementation in the Linux kernel.

It was discovered that the XFS filesystem did not enforce that the realtime inode flag was settable only on filesystems on a realtime device.

漏洞危害

A local attacker in a guest VM could use this to cause a denial of service (host system crash). (CVE-2017-1000252)

A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-10663)

A local attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs. (CVE-2017-10911)

A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-11176)

A local attacker could use this to cause a denial of service (system crash). (CVE-2017-14340)

解决方案

Refer to Ubuntu advisory USN-3468-1 for affected packages and patching details, or update with your package manager.

Patch:
Following are links for downloading patches to fix the vulnerabilities:

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