Bug 1760420 (CVE-2019-16233)

Summary:	CVE-2019-16233 kernel: null pointer dereference in drivers/scsi/qla2xxx/qla_os.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
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 QLOGIC drivers for HBA. A call to alloc_workqueue return was not validated and can cause a denial of service. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-29 21:58:35 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:	1760421, 1829246, 1829248, 1829249, 1829250, 1829251
Bug Blocks:	1760422

Description Guilherme de Almeida Suckevicz 2019-10-10 14:00:26 UTC

A NULL pointer dereference flaw was found in qla2x00_probe_one in drivers/scsi/qla2xxx/qla_os.c in Qlogic drivers for HBA.  Here a call to alloc_workqueue return was not validated and this 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://lkml.org/lkml/2019/9/9/487

Comment 1 Guilherme de Almeida Suckevicz 2019-10-10 14:01:07 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1760421]

Comment 2 Justin M. Forbes 2019-12-02 14:49:37 UTC

This was fixed for Fedora in the 5.3.10 stable kernel update.

Comment 8 Eric Christensen 2020-05-04 18:01:15 UTC

External References:

https://lkml.org/lkml/2019/9/9/487

Comment 9 Eric Christensen 2020-05-04 18:01:18 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 10 errata-xmlrpc 2020-09-29 18:58:06 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 20:51:42 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 21:58:35 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-2019-16233

Comment 28 errata-xmlrpc 2020-11-04 00:49:28 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 02:21:13 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