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: 1828802 1828803 1828805 1828806 1819379 1828804
Blocks: 1750356 1819378
TreeView+ depends on / blocked
 
Reported: 2020-03-31 19:10 UTC by msiddiqu
Modified: 2020-07-07 19:27 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


Attachments (Terms of Use)


Links
System ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:2854 None None None 2020-07-07 13:18:52 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


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