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             AUSCERT External Security Bulletin Redistribution

                 Linux kernel vulnerability CVE-2019-19059
                                21 May 2020


        AusCERT Security Bulletin Summary

Product:           kernel
Publisher:         F5 Networks
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-19059  

Reference:         ESB-2020.0945

Original Bulletin: 

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K06554372:Linux kernel vulnerability CVE-2019-19059

Security Advisory

Original Publication Date: 21 May, 2020

Security Advisory Description

Multiple memory leaks in the iwl_pcie_ctxt_info_gen3_init() function in 
drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c in the Linux kernel 
through 5.3.11 allow attackers to cause a denial of service (memory consumption)
by triggering iwl_pcie_init_fw_sec() or dma_alloc_coherent() failures, aka
CID-0f4f199443fa. (CVE-2019-19059)


An attacker may be able to trigger a denial-of-service (DoS) attack on the
system by way of causing memory exhaustion when the vulnerability is exploited.

Security Advisory Status

F5 Product Development has assigned ID CPF-25166 (Traffix) to this

To determine if your product and version have been evaluated for this
vulnerability, refer to the Applies to (see versions) box. To determine if 
your release is known to be vulnerable, the components or features that are 
affected by the vulnerability, and for information about releases, point 
releases, or hotfixes that address the vulnerability, refer to the following 

For more information about security advisory versioning, refer to K51812227: 
 Understanding Security Advisory versioning.

|                   |      |Versions  |Fixes     |         |CVSSv3|Vulnerable|
|Product            |Branch|known to  |introduced|Severity |score^|component |
|                   |      |be        |in        |         |1     |or feature|
|                   |      |vulnerable|          |         |      |          |
|                   |15.x  |None      |Not       |         |      |          |
|                   |      |          |applicable|         |      |          |
|                   +------+----------+----------+         |      |          |
|                   |14.x  |None      |Not       |         |      |          |
|BIG-IP (LTM, AAM,  |      |          |applicable|         |      |          |
|AFM, Analytics,    +------+----------+----------+         |      |          |
|APM, ASM, DNS, FPS,|13.x  |None      |Not       |Not      |None  |None      |
|GTM, Link          |      |          |applicable|vulnerable|      |         |
|Controller, PEM)   +------+----------+----------+          |      |         |
|                   |12.x  |None      |Not       |          |      |         |
|                   |      |          |applicable|          |      |         |
|                   +------+----------+----------+          |      |         |
|                   |11.x  |None      |Not       |          |      |         |
|                   |      |          |applicable|          |      |         |
|                   |7.x   |None      |Not       |          |      |         |
|                   |      |          |applicable|          |      |         |
|                   +------+----------+----------+          |      |         |
|BIG-IQ Centralized |6.x   |None      |Not       |Not       |None  |None     |
|Management         |      |          |applicable|vulnerable|      |         |
|                   +------+----------+----------+          |      |         |
|                   |5.x   |None      |Not       |          |      |         |
|                   |      |          |applicable|          |      |         |
|Traffix SDC        |5.x   |5.1.0     |None      |High      |7.5   |Bash     |

^1The CVSSv3 score link takes you to a resource outside of AskF5, and it is
possible that the document may be removed without our knowledge.

Security Advisory Recommended Actions

If you are running a version listed in the Versions known to be vulnerable
column, you can eliminate this vulnerability by upgrading to a version listed
in the Fixes introduced in column. If the table lists only an older version
than what you are currently running, or does not list a non-vulnerable version
then no upgrade candidate currently exists.



Supplemental Information

o K51812227: Understanding Security Advisory versioning
  o K41942608: Overview of Security Advisory articles
  o K4602: Overview of the F5 security vulnerability response policy
  o K4918: Overview of the F5 critical issue hotfix policy
  o K167: Downloading software and firmware from F5
  o K9970: Subscribing to email notifications regarding F5 products
  o K9957: Creating a custom RSS feed to view new and updated documents

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