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CVE Database

CVE-2012-2744

Impact: Important
Public: 2012-07-10
CWE: CWE-228->CWE-476
Bugzilla: 833402: CVE-2012-2744 kernel: netfilter: null pointer dereference in nf_ct_frag6_reasm()

Details

The MITRE CVE dictionary describes this issue as:

net/ipv6/netfilter/nf_conntrack_reasm.c in the Linux kernel before 2.6.34, when the nf_conntrack_ipv6 module is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via certain types of fragmented IPv6 packets.

Find out more about CVE-2012-2744 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 as they did not include support for netfilter's ipv6 connection tracking module. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux MRG as they already contain the upstream commit that fixes this issue.

CVSS v2 metrics

Base Score: 7.8
Base Metrics: AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector: Network
Access Complexity: Low
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux Server EUS (v. 6.0) (kernel) RHSA-2012:1114 July 24, 2012
Red Hat Enterprise Linux Server EUS (v. 6.1) (kernel) RHSA-2012:1148 August 07, 2012
Red Hat Enterprise Linux Server EUS (v. 6.2) (kernel) RHSA-2012:1129 July 31, 2012
Red Hat Enterprise Linux version 6 (kernel) RHSA-2012:1064 July 10, 2012

External References

Acknowledgements

Red Hat would like to thank Antonios Atlasis working with Beyond Security's SecuriTeam Secure Disclosure program for reporting this issue.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.