CVE-2020-8832

An information disclosure flaw was found in the Linux kernel. The original fix for CVE-2019-14615 was deemed to be incomplete. The i915 graphics driver lacks control of flow for data structures which may allow a local, authenticated user to disclose information when using ioctl commands with an attached i915 device. The highest threat from this vulnerability is to data confidentiality.

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.

Preventing loading of the i915 kernel module will prevent attackers from using this exploit against the system; however, the power management functionality of the card will be disabled and the system may draw additional power. See the kcs “How do I blacklist a kernel module to prevent it from loading automatically?“ (https://access.redhat.com/solutions/41278) for instructions on how to disable a kernel module from autoloading. Graphical displays may also be at low resolution or not work correctly.

This mitigation may not be suitable if the graphical login functionality is required.