(RHSA-2019:2854) Important: kpatch-patch security update

2019-09-21T20:52:30
ID RHSA-2019:2854
Type redhat
Reporter RedHat
Modified 2019-09-21T21:02:59

Description

This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the code of a running kernel.

Security Fix(es):

  • A buffer overflow flaw was found in the way Linux kernel's vhost functionality that translates virtqueue buffers to IOVs, logged the buffer descriptors during migration. A privileged guest user able to pass descriptors with invalid length to the host when migration is underway, could use this flaw to increase their privileges on the host. (CVE-2019-14835)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.