Bug 1542102 – CVE-2018-6485 glibc: Integer overflow in posix_memalign in memalign functions

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Bug 1542102 - (CVE-2018-6485) CVE-2018-6485 glibc: Integer overflow in posix_memalign in memalign functions

Summary:	CVE-2018-6485 glibc: Integer overflow in posix_memalign in memalign functions

Status:	NEW

Aliases:	CVE-2018-6485

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,public=20171010,repor...
Keywords:	Reopened, Security

Depends On:	1542103 1547996 1547997 1547998 1548002 1548003 1548004 1548005 1548007 1548008
Blocks:	1542106
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Reported:	2018-02-05 10:04 EST by Laura Pardo
Modified:	2018-10-30 03:36 EDT (History)
CC List:	14 users (show)

See Also:
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Last Closed:	2018-02-22 09:54:22 EST
Type:	---
Regression:	---
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2018:3092	None	None	None	2018-10-30 03:36 EDT

Groups: None (edit)

Description Laura Pardo 2018-02-05 10:04:09 EST

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 10:04:43 EST

Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 1542103]

Comment 8 Pedro Yóssis Silva Barbosa 2018-02-22 09:23:57 EST

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 12:30:31 EST

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 04:12:35 EST

Hi,

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

Thanks,
Yogesh Sawant

Comment 13 errata-xmlrpc 2018-10-30 03:36:34 EDT

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

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