Bug 1745536 (CVE-2019-15219) - CVE-2019-15219 kernel: null pointer dereference in drivers/usb/misc/sisusbvga/sisusb.c driver
Summary: CVE-2019-15219 kernel: null pointer dereference in drivers/usb/misc/sisusbvga...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-15219
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: 1745543 1820440 1820441 1820442 1820443 1820444
Blocks: 1745542
TreeView+ depends on / blocked
 
Reported: 2019-08-26 10:41 UTC by Dhananjay Arunesh
Modified: 2021-10-25 09:53 UTC (History)
40 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-10-25 09:53:08 UTC
Embargoed:

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Description Dhananjay Arunesh 2019-08-26 10:41:56 UTC 
A vulnerability was found in the Linux kernel. There is a NULL pointer dereference caused by a malicious USB device in the drivers/usb/misc/sisusbvga/sisusb.c driver.

Reference:
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.8
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9a5729f68d3a82786aea110b1bfe610be318f80a
https://syzkaller.appspot.com/bug?id=aaf6794922521df1c35c81e32cb2d0bb6a351e7b
Comment 1 Dhananjay Arunesh 2019-08-26 10:47:21 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1745543]
Comment 2 Justin M. Forbes 2019-08-26 13:18:31 UTC 
This was fixed for Fedora with the 5.1.8 stable kernel updates.
Comment 3 Petr Matousek 2020-04-03 05:28:11 UTC 
Statement:

This issue is rated as having Low impact because of the physical access needed to trigger this issue. Also, failed initialization with the core USB subsystem is also a rare event to hit.
Comment 4 Petr Matousek 2020-04-03 05:35:58 UTC 
Mitigation:

To mitigate this issue, prevent module sisusbvga from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
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