Bug 1749974 (CVE-2019-15221) - CVE-2019-15221 kernel: Null pointer dereference in the sound/usb/line6/pcm.c
Summary: CVE-2019-15221 kernel: Null pointer dereference in the sound/usb/line6/pcm.c
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-15221
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: 1733130 1738610 1749980 1820455 1820456 1820457 1882424 1882425
Blocks: 1749984
TreeView+ depends on / blocked
 
Reported: 2019-09-07 01:16 UTC by Pedro Sampaio
Modified: 2023-05-12 21:13 UTC (History)
41 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-10-25 09:53:12 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:2052 0 None None None 2020-05-11 12:53:48 UTC
Red Hat Product Errata RHBA-2020:2626 0 None None None 2020-06-19 01:49:50 UTC
Red Hat Product Errata RHSA-2020:1567 0 None None None 2020-04-28 15:25:05 UTC
Red Hat Product Errata RHSA-2020:1769 0 None None None 2020-04-28 15:51:28 UTC

Description Pedro Sampaio 2019-09-07 01:16:17 UTC 
An issue was discovered in the Linux kernel before 5.1.17. There is a
NULL pointer dereference caused by a malicious USB device in the
sound/usb/line6/pcm.c driver.

Upstream patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3450121997ce872eb7f1248417225827ea249710

References:

https://www.openwall.com/lists/oss-security/2019/08/20/2
https://syzkaller.appspot.com/bug?id=240f09164db2c3d3af33a117c713dc7650dc29d6
Comment 1 Pedro Sampaio 2019-09-07 01:30:57 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1749980]
Comment 2 Justin M. Forbes 2019-09-09 06:58:49 UTC 
This was fixed for Fedora with the 5.1.17 stable kernel updates.
Comment 5 Petr Matousek 2020-04-03 06:28:58 UTC 
Statement:

This issue is rated as having Low impact because of the physical access needed to trigger this issue.
Comment 6 Petr Matousek 2020-04-03 06:29:01 UTC 
Mitigation:

To mitigate this issue, prevent module snd-usb-line6 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
Comment 7 errata-xmlrpc 2020-04-28 15:25:02 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1567 https://access.redhat.com/errata/RHSA-2020:1567
Comment 8 errata-xmlrpc 2020-04-28 15:51:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1769 https://access.redhat.com/errata/RHSA-2020:1769
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