Bug 1819399 (CVE-2019-9455) - CVE-2019-9455 kernel: kernel pointer leak due to WARN_ON statement in video driver leads to local information disclosure
Summary: CVE-2019-9455 kernel: kernel pointer leak due to WARN_ON statement in video d...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-9455
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1819401 1825616 1825617
Blocks: 1750356 1819400
TreeView+ depends on / blocked
 
Reported: 2020-03-31 19:33 UTC by msiddiqu
Modified: 2021-02-16 20:20 UTC (History)
45 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernel's video driver. A kernel pointer lead, due to a WARN_ON statement could lead to a local information disclosure with system execution privileges. User interaction is not needed for exploitation. The highest threat from this vulnerability is to data confidentiality.
Clone Of:
Environment:
Last Closed: 2020-11-04 02:24:51 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:4431 0 None None None 2020-11-04 00:50:44 UTC
Red Hat Product Errata RHSA-2020:4609 0 None None None 2020-11-04 02:23:00 UTC

Description msiddiqu 2020-03-31 19:33:42 UTC 
A vulnerability was found in the video driver in Kernel where there is a kernel pointer leak due to a WARN_ON statement. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.

References:

https://source.android.com/security/bulletin/pixel/2019-09-01
Comment 1 msiddiqu 2020-03-31 19:34:42 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1819401]
Comment 2 Justin M. Forbes 2020-04-01 15:02:37 UTC 
This was fixed for Fedora with the 5.0 series kernel rebases.
Comment 8 Petr Matousek 2020-04-28 12:21:18 UTC 
Statement:

This issue is marked as having Low impact because the information leak is very subtle and can be only used to break KASLR and not provide access to kernel memory content.
Comment 9 Petr Matousek 2020-04-28 12:21:23 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 11 errata-xmlrpc 2020-11-04 00:50:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4431 https://access.redhat.com/errata/RHSA-2020:4431
Comment 12 errata-xmlrpc 2020-11-04 02:22:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4609 https://access.redhat.com/errata/RHSA-2020:4609
Comment 13 Product Security DevOps Team 2020-11-04 02:24:51 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-9455
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