Bug 633145 (CVE-2010-3297)

Summary:	CVE-2010-3297 kernel: drivers/net/eql.c: reading uninitialized stack memory
Product:	[Other] Security Response	Reporter:	Eugene Teo (Security Response) <eteo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bhu, jkacur, lgoncalv, lwang, pmatouse, 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:	2015-08-22 15:23:08 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:	633146, 633147
Bug Blocks:

Description Eugene Teo (Security Response) 2010-09-13 04:03:21 UTC

Description of problem:
http://lkml.org/lkml/2010/9/11/168
The EQL_GETMASTRCFG device ioctl allows unprivileged users to read 16 bytes of uninitialized stack memory, because the "master_name" member of the master_config_t struct declared on the stack in eql_g_master_cfg() is not altered or zeroed before being copied back to the user.

Acknowledgements:

Red Hat would like to thank Dan Rosenberg for reporting this issue.

Comment 2 John Kacur 2010-09-17 12:18:19 UTC

This is 44467187dc22fdd33a1a06ea0ba86ce20be3fe3c
in David Miller's git repo

Comment 3 Eugene Teo (Security Response) 2010-10-13 04:44:45 UTC

Upstream commit:
http://git.kernel.org/linus/44467187dc22fdd33a1a06ea0ba86ce20be3fe3c

Comment 4 errata-xmlrpc 2010-10-14 15:30:34 UTC

This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2010:0771 https://rhn.redhat.com/errata/RHSA-2010-0771.html

Comment 5 Eugene Teo (Security Response) 2010-11-02 05:01:25 UTC

Statement:

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 3, 4, and 5 as they did not include support for equalizer load-balancer for serial network interfaces. This was addressed in Red Hat Enterprise Linux Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2010-0771.html.