Bug 1743560 (CVE-2019-15099) - CVE-2019-15099 kernel: a NULL pointer dereference in drivers/net/wireless/ath/ath10k/usb.c leads to a crash
Summary: CVE-2019-15099 kernel: a NULL pointer dereference in drivers/net/wireless/ath...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-15099
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: 1783849 1783850 1783851 1783852 1783853
Blocks: 1743561
TreeView+ depends on / blocked
 
Reported: 2019-08-20 08:28 UTC by Marian Rehak
Modified: 2021-02-16 21:29 UTC (History)
48 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A null pointer dereference flaw was discovered in the Linux kernel's implementation of the ath10k USB device driver. The vulnerability requires the attacker to plug in a specially crafted hardware device that present endpoint descriptors that normal ath10k devices do not recognize. System availability is the highest threat with this vulnerability.
Clone Of:
Environment:
Last Closed: 2020-04-16 16:31:52 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 12:53:47 UTC
Red Hat Product Errata RHBA-2020:2626 0 None None None 2020-06-19 01:49:49 UTC
Red Hat Product Errata RHSA-2020:1493 0 None None None 2020-04-16 14:38:38 UTC
Red Hat Product Errata RHSA-2020:1567 0 None None None 2020-04-28 15:25:01 UTC
Red Hat Product Errata RHSA-2020:1769 0 None None None 2020-04-28 15:51:26 UTC

Description Marian Rehak 2019-08-20 08:28:23 UTC 
A flaw in the Linux kernels implementation of the ath10k USB device driver could allow an attacker with the ability to plug in custom-crafted hardware to create a null pointer dereference via an incomplete address in an endpoint descriptor.

This will crash the system.

Upstream Patch:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=bfd6e6e6c5d2ee43a3d9902b36e01fc7527ebb27
Comment 4 Wade Mealing 2019-12-16 05:16:26 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1783849]
Comment 6 Justin M. Forbes 2019-12-16 17:24:06 UTC 
This was fixed for Fedora in the 5.3.14 stable kernel updates.
Comment 8 Eric Christensen 2020-01-08 14:10:50 UTC 
Mitigation:

As the ath10k module will be auto-loaded when required, its use can be disabled by preventing the module from loading using the following instructions.

On the command line, as root, execute the following command:
# echo "install ath10k_usb /bin/true" >> /etc/modprobe.d/disable-ath10k_usb.conf 
 
The system will need to be restarted if the ath10k_usb module are loaded. In most circumstances, the kernel modules will be unable to be unloaded while the ath10k WiFi network interface is in use. If the system requires this module to work correctly, this mitigation may not be suitable.

If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.
Comment 9 errata-xmlrpc 2020-04-16 14:38:36 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1493 https://access.redhat.com/errata/RHSA-2020:1493
Comment 10 Product Security DevOps Team 2020-04-16 16:31:52 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-2019-15099
Comment 11 errata-xmlrpc 2020-04-28 15:24:58 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 12 errata-xmlrpc 2020-04-28 15:51:23 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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