Bug 241863 – CVE-2007-2525 PPPoE socket PPPIOCGCHAN denial of service

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Bug 241863 - CVE-2007-2525 PPPoE socket PPPIOCGCHAN denial of service

Summary:	CVE-2007-2525 PPPoE socket PPPIOCGCHAN denial of service

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 5
Classification:	Red Hat
Component:	kernel (Show other bugs)
Sub Component:
Version:	5.0
Hardware:	All Linux

Priority	medium Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Don Howard
QA Contact:	Martin Jenner
Docs Contact:

URL:
Whiteboard:	impact=important,source=secunia,repor...
Keywords:	Security

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2007-05-31 04:20 EDT by Marcel Holtmann
Modified:	2007-11-30 17:07 EST (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	RHSA-2007-0376
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2007-06-14 10:55:14 EDT
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-2007:0376	normal	SHIPPED_LIVE	Important: kernel security and bug fix update	2007-06-14 10:54:48 EDT

Groups: None (edit)

Description Marcel Holtmann 2007-05-31 04:20:11 EDT

A vulnerability has been reported in the Linux Kernel, which potentially can be
exploited by malicious, local users to cause a DoS (Denial of Service).

The vulnerability is caused due to a memory leak when releasing PPPoE sockets
after they are connected, but before the "PPPIOCGCHAN" ioctl is called. This can
be exploited to cause a DoS due to memory exhaustion.

Comment 1 Don Howard 2007-06-01 19:33:11 EDT

A patch addressing this issue has been included in build 2.6.18-8.1.6.el5

Comment 3 Mike Gahagan 2007-06-08 15:16:57 EDT

Confirmed the patch is in 2.6.18-8.1.6.el5

Comment 5 Red Hat Bugzilla 2007-06-14 10:55:14 EDT

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-2007-0376.html

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