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Last updated: 5/28/2016 3:58:40 AM

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Vulnerability Summary for CVE-2006-4623

Original release date: 09/11/2006
Last revised: 03/07/2011


The Unidirectional Lightweight Encapsulation (ULE) decapsulation component in dvb-core/dvb_net.c in the dvb driver in the Linux kernel allows remote attackers to cause a denial of service (crash) via an SNDU length of 0 in a ULE packet.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.8 HIGH
Impact Subscore: 6.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service


There is a patch available for the affected product release.

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/21/2006)
Red Hat is aware of this issue and is tracking it via the following bug for Red Hat Enterprise Linux 4: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=204912 This issue does not affect Red Hat Enterprise Linux 2.1 or 3.

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External Source: VUPEN
Name: ADV-2006-3551
External Source: OVAL
Name: oval:org.mitre.oval:def:9775
External Source: MANDRIVA
Name: MDKSA-2006:182
External Source: SUSE
Name: SUSE-SA:2006:079
External Source: CONFIRM
Name: http://support.avaya.com/elmodocs2/security/ASA-2006-249.htm
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-721
External Source: BID
Name: 19939
Type: Patch Information
External Source: REDHAT
Name: RHSA-2006:0689
External Source: MLIST
Name: [lkml-patch] 20060821 dvb-core: Proper handling ULE SNDU length of 0
Type: Patch Information
External Source: DEBIAN
Name: DSA-1304
External Source: UBUNTU
Name: USN-489-1
External Source: BUGTRAQ
Name: 20061017 rPSA-2006-0194-1 kernel
External Source: BUGTRAQ
Name: 20070615 rPSA-2007-0124-1 kernel xen

References to Check Content

Identifier: oval:org.mitre.oval:def:9775
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Vulnerable software and versions

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