Bug 1542102 (CVE-2018-6485)

Summary:	CVE-2018-6485 glibc: Integer overflow in posix_memalign in memalign functions
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	alanm, aoliva, arjun.is, ashankar, codonell, dj, fweimer, glibc-bugzilla, law, mfabian, mnewsome, pfrankli, sardella, siddhesh, y.sawant
Target Milestone:	---	Keywords:	Reopened, Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:39:16 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:	1542103, 1547996, 1547997, 1547998, 1548002, 1548003, 1548004, 1548005, 1548007, 1548008
Bug Blocks:	1542106

Description Laura Pardo 2018-02-05 15:04:09 UTC

A flaw was found in glibc. An integer overflow in the implementation of the posix_memalign in memalign functions in the GNU C Library (aka glibc or libc6) 2.26 and earlier could cause these functions to return a pointer to a heap area that is too small, potentially leading to heap corruption. 


References:
https://sourceware.org/bugzilla/show_bug.cgi?id=22343


Patch:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8e448310d74b283c5cd02b9ed7fb997b47bf9b22

Comment 1 Laura Pardo 2018-02-05 15:04:43 UTC

Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1542103]

Comment 8 Pedro Yóssis Silva Barbosa 2018-02-22 14:23:57 UTC

Statement:

This issue affects the versions of glibc and compat-glibc as shipped with Red Hat Enterprise Linux 5, Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

Comment 11 Fedora Update System 2018-03-06 17:30:31 UTC

glibc-2.26-26.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.

Comment 12 Yogesh Sawant 2018-03-09 09:12:35 UTC

Hi,

I am hoping to see a fix for CVE-2018-6485 in RHEL6

Thanks,
Yogesh Sawant

Comment 13 errata-xmlrpc 2018-10-30 07:36:34 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3092 https://access.redhat.com/errata/RHSA-2018:3092