Bug 191258

Summary: CVE-2006-2274 SCTP DATA fragments DoS
Product: Red Hat Enterprise Linux 4 Reporter: Marcel Holtmann <holtmann>
Component: kernelAssignee: Neil Horman <nhorman>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: davem, jbaron, security-response-team, tgraf
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,source=vendorsec,reported=20060509,public=20060509
Fixed In Version: RHSA-2006-0493 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-05-24 09:32:49 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:

Description Marcel Holtmann 2006-05-10 08:00:48 UTC
Linux SCTP before 2.6.17 allows remote attackers to cause a denial of service
via a packet that contains two or more DATA fragments, which causes an skb
pointer to refer back to itself when the full message is reassembled, leading to
infinite recursion in the sctp_skb_pull function.

This issue hasn't been reproduced with RHEL4, but the vulnerable code is the
same as upstream.

The upstream fix can be found here:

http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=672e7cca17ed6036a1756ed34cf20dbd72d5e5f6

Comment 4 Jason Baron 2006-05-22 19:10:09 UTC
committed in stream U4 build 36.1. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/


Comment 6 Red Hat Bugzilla 2006-05-24 09:32:49 UTC
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-2006-0493.html