Bug 144137 – CAN-2004-1235 isec.pl do_brk() privilege escalation

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Bug 144137 - (IT_62045) CAN-2004-1235 isec.pl do_brk() privilege escalation

Summary:	CAN-2004-1235 isec.pl do_brk() privilege escalation

Status:	CLOSED ERRATA

Aliases:	IT_62045

Product:	Red Hat Enterprise Linux 2.1
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	2.1
Hardware:	i386 Linux

Priority	medium Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Jim Paradis
QA Contact:	Brian Brock
Docs Contact:

URL:
Whiteboard:	reported=20041222,public=20050106,imp...
Keywords:	Security

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2005-01-04 14:39 EST by Josh Bressers
Modified:	2013-08-05 21:11 EDT (History)
CC List:	6 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2005-01-21 10:37:27 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2005:016	normal	SHIPPED_LIVE	Important: kernel security update	2005-01-21 00:00:00 EST

Groups: None (edit)

Description Josh Bressers 2005-01-04 14:39:40 EST

isec.pl reported a missing down() on mmap_sem semaphore whilst calling do_brk;
so if do_brk() sleeps on a kmalloc it may get into a VMA list race - leading to
results similar to the do_brk exploit.

Comment 2 Josh Bressers 2005-01-04 14:49:25 EST

Attachment 109343 [details]
Contains the patch for this issue.

Comment 3 Mark J. Cox 2005-01-10 04:29:46 EST

Removing embargo

Comment 4 Jim Paradis 2005-01-17 15:50:46 EST

A fix for this problem has also been committed to the RHEL2.1 U7
patch pool (in kernel version 2.4.9-e.59)

Comment 5 Josh Bressers 2005-01-21 10:37:27 EST

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2005-016.html

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