CVE-2019-16089

An improper return check flaw was found in the Linux kernel’s network block device driver functionality when the user call query to check the status of existing network block devices. This flaw allows a local user to crash the system.

The impact of this issue is Low, because attack is specific for certain network block device usage and could be triggered only by local user with access to the device (resulting denial-of-service) and attack is complex, because could happen only if specific condition (out of memory) at the moment of the attack is met.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, prevent module nbd from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.