Bug 1760310 (CVE-2019-16231)

Summary:	CVE-2019-16231 kernel: null-pointer dereference in drivers/net/fjes/fjes_main.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	acaringi, airlied, bdettelb, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, rkeshri, rt-maint, rvrbovsk, steved, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel. A NULL pointer dereference flaw was found in the FUJITSU Extended Socket Network driver. A call to the alloc_workqueue return was not validated and causes a denial of service at the time of failure. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-29 21:58:31 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1760314, 1830563, 1830564, 1830565, 1830566, 1830567
Bug Blocks:	1760312

Description Dhananjay Arunesh 2019-10-10 11:15:41 UTC

A NULL pointer dereference flaw was found in fjes_probe in drivers/net/fjes/fjes_main.c in FUJITSU Extended Socket Network driver.  Here a call to alloc_workqueue return was not validated and can cause a denial of service at the time of failure. This could allow an attacker to crash the system or leak kernel internal information.

Reference:
https://security.netapp.com/advisory/ntap-20191004-0001/
https://lkml.org/lkml/2019/9/9/487

Comment 1 Dhananjay Arunesh 2019-10-10 11:18:40 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1760314]

Comment 2 Justin M. Forbes 2019-12-02 14:50:40 UTC

This was fixed for Fedora in the 5.3.11 stable kernel update

Comment 4 Rohit Keshri 2020-05-02 18:12:39 UTC

Mitigation:

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Comment 9 Eric Christensen 2020-05-04 17:58:26 UTC

External References:

https://security.netapp.com/advisory/ntap-20191004-0001/
https://lkml.org/lkml/2019/9/9/487

Comment 10 errata-xmlrpc 2020-09-29 18:58:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4062 https://access.redhat.com/errata/RHSA-2020:4062

Comment 11 errata-xmlrpc 2020-09-29 20:51:39 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4060 https://access.redhat.com/errata/RHSA-2020:4060

Comment 12 Product Security DevOps Team 2020-09-29 21:58:31 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-2019-16231

Comment 28 errata-xmlrpc 2020-11-04 00:49:27 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 29 errata-xmlrpc 2020-11-04 02:21:10 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