CVE-2020-8832

2020-03-3014:31:52

redhat.com

access.redhat.com

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:L/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

40.6%

JSON

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.

Mitigation

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.