Bug 703026 (CVE-2011-1776)

Summary:	CVE-2011-1776 kernel: validate size of EFI GUID partition entries
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:	arozansk, bhu, dhoward, fhrbata, jkacur, kernel-mgr, kmcmartin, lgoncalv, lwang, nobody, plougher, pmatouse, rkhan, rt-maint, sforsber, tcallawa, 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:	2015-07-29 12:44:59 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:	703027, 703028, 703029, 703030, 703031
Bug Blocks:

Description Eugene Teo (Security Response) 2011-05-09 03:09:02 UTC

The kernel automatically evaluates partition tables of storage devices. The code for evaluating GUID partitions (in fs/partitions/efi.c) contains a bug that can cause a kernel heap overflow on certain corrupted GUID partition tables.

Upstream commit:
http://git.kernel.org/linus/fa039d5f6b126fbd65eefa05db2f67e44df8f121

Acknowledgements:

Red Hat would like to thank Timo Warns for reporting this issue.

Comment 3 Petr Matousek 2011-05-09 20:45:25 UTC

Statement:

This issue affects the versions of Linux kernel as shipped with Red Hat
Enterprise 4, 5, 6, and Red Hat Enterprise MRG. This has been addressed in Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0927.html and https://rhn.redhat.com/errata/RHSA-2011-1189.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.

Comment 4 Eugene Teo (Security Response) 2011-05-11 01:43:48 UTC

CVE-2011-1776 addresses the size of partition entries used for allocating a data structure.

Comment 10 errata-xmlrpc 2011-07-15 06:09:13 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0927 https://rhn.redhat.com/errata/RHSA-2011-0927.html

Comment 11 errata-xmlrpc 2011-08-23 14:42:38 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:1189 https://rhn.redhat.com/errata/RHSA-2011-1189.html

Comment 12 errata-xmlrpc 2011-09-12 19:46:07 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2011:1253 https://rhn.redhat.com/errata/RHSA-2011-1253.html