Bug 1278005

Summary:	kernel: non-limited printk warning in security/selinux/hooks.c
Product:	[Other] Security Response	Reporter:	Vladis Dronov <vdronov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	agordeev, aquini, arm-mgr, bhu, carnil, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jen, jforbes, jkacur, joelsmith, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, kstutsma, lgoncalv, lwang, madhu.chinakonda, matt, mchehab, mcressma, mguzik, nmurray, pholasek, plougher, pmatouse, rt-maint, rvrbovsk, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-11-04 15:41:57 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:
Bug Blocks:	1273909

Description Vladis Dronov 2015-11-04 14:23:51 UTC

It was found that the kernel produces unlimited number of warning messages in case certain malformed NETLINK packets are received. A local, unprivileged user could generate such packets unlimitedly and potentially flood the kernel and the system log with excessive warning messages.

Acknowledgements:

This issue was discovered by Florian Weimer of Red Hat.

Comment 2 Vladis Dronov 2015-11-04 15:25:32 UTC

Statement:

This problem does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6 and MRG-2. This issue affects the Linux kernel packages as shipped with Red Hat Enterprise Linux 7.

This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Comment 4 Petr Matousek 2015-11-04 15:55:34 UTC

Upstream patch submission:

http://article.gmane.org/gmane.linux.kernel.lsm/25958

Comment 5 Vladis Dronov 2015-11-13 14:23:48 UTC

Upstream patch version next submission:

http://article.gmane.org/gmane.linux.kernel.lsm/25996