Bug 1777449 (CVE-2019-18809) - CVE-2019-18809 kernel: memory leak in af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c
Summary: CVE-2019-18809 kernel: memory leak in af9005_identify_state() function in dr...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-18809
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: 1777451 1825141 1825142 1825143
Blocks: 1777490
TreeView+ depends on / blocked
 
Reported: 2019-11-27 15:32 UTC by Dhananjay Arunesh
Modified: 2021-02-16 20:58 UTC (History)
44 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Afatech 9005 DVB-T receiver driver in the Linux kernel. An attacker, with physical access to the system, could cause the system to crash following a resource cleanup. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2020-11-04 02:23:31 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:4431 0 None None None 2020-11-04 00:49:58 UTC
Red Hat Product Errata RHSA-2020:4609 0 None None None 2020-11-04 02:21:52 UTC

Description Dhananjay Arunesh 2019-11-27 15:32:47 UTC 
A memory leak in the af9005_identify_state() function in drivers/media/usb/dvb-usb/af9005.c in the Linux kernel allows attackers to cause a denial of service (memory consumption)

Reference:
https://github.com/torvalds/linux/commit/2289adbfa559050d2a38bcd9caac1c18b800e928
Comment 1 Dhananjay Arunesh 2019-11-27 15:34:07 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1777451]
Comment 3 Petr Matousek 2020-04-17 07:32:46 UTC 
Mitigation:

In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module dvb-usb-af9005. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278
Comment 5 errata-xmlrpc 2020-11-04 00:49:56 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 6 errata-xmlrpc 2020-11-04 02:22:07 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
Comment 7 Product Security DevOps Team 2020-11-04 02:23:31 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-2019-18809
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