Bug 1819377 (CVE-2019-9458) - CVE-2019-9458 kernel: use after free due to race condition in the video driver leads to local privilege escalation
Summary: CVE-2019-9458 kernel: use after free due to race condition in the video drive...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-9458
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1819379 1828802 1828803 1828804 1828805 1828806 1888700
Blocks: 1750356 1819378
TreeView+ depends on / blocked
 
Reported: 2020-03-31 19:10 UTC by msiddiqu
Modified: 2021-02-16 20:21 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 race condition, leading to a use-after-free, could lead to a local privilege escalation. User interaction is not needed for exploitation.
Clone Of:
Environment:
Last Closed: 2020-07-07 19:27:59 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:4416 0 None None None 2020-10-29 15:10:28 UTC
Red Hat Product Errata RHBA-2020:4417 0 None None None 2020-10-29 15:08:56 UTC
Red Hat Product Errata RHBA-2020:4418 0 None None None 2020-10-29 15:14:20 UTC
Red Hat Product Errata RHBA-2020:4419 0 None None None 2020-10-29 15:12:47 UTC
Red Hat Product Errata RHBA-2020:4420 0 None None None 2020-10-29 15:51:40 UTC
Red Hat Product Errata RHSA-2020:2854 0 None None None 2020-07-07 13:18:52 UTC
Red Hat Product Errata RHSA-2020:4060 0 None None None 2020-09-29 20:53:53 UTC
Red Hat Product Errata RHSA-2020:4062 0 None None None 2020-09-29 18:59:40 UTC
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 02:22:54 UTC

Description msiddiqu 2020-03-31 19:10:34 UTC 
A vulnerability was found in the video driver in Kernel where there is a use after free due to a race condition. This could lead to local escalation of privilege with no additional 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 19:11:59 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1819379]
Comment 3 Justin M. Forbes 2020-04-01 14:33:54 UTC 
This was fixed for Fedora in the 4.18.12 stable kernel update.
Comment 5 Alex 2020-04-27 16:20:42 UTC 
Mitigation:

To mitigate this issue, prevent modules v4l2-common, v4l2-dv-timings from being loaded if not being used for primary display. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Comment 10 Alex 2020-04-28 11:51:37 UTC 
Statement:

This issue is rated as having Moderate impact, because of the need of additional privileges (usually local console user) to access the video device driver.
Comment 12 errata-xmlrpc 2020-07-07 13:18:49 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:2854 https://access.redhat.com/errata/RHSA-2020:2854
Comment 13 Product Security DevOps Team 2020-07-07 19:27:59 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-2019-9458
Comment 14 errata-xmlrpc 2020-09-29 18:59:35 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4062 https://access.redhat.com/errata/RHSA-2020:4062
Comment 15 errata-xmlrpc 2020-09-29 20:53:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4060 https://access.redhat.com/errata/RHSA-2020:4060
Comment 32 errata-xmlrpc 2020-11-04 00:50:40 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 33 errata-xmlrpc 2020-11-04 02:22:50 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
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