Public Date:
1424751: CVE-2017-2634 kernel: dccp: crash while sending ipv6 reset packet
It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation used the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections, which could result in memory corruptions. A remote attacker could use this flaw to crash the system.

Find out more about CVE-2017-2634 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue affects Red Hat Enterprise Linux 5 kernel. This issue was fixed in a versions 6 and 7 prior to this issue being raised.

Future Linux kernel updates for Red Hat Enterprise Linux 5 may address this issue.

CVSS v3 metrics

CVSS3 Base Score 7.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Impact None
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 5 (kernel) RHSA-2017:0323 2017-02-24
Red Hat Enterprise Linux Long Life (v. 5.6 server) (kernel) RHSA-2017:0347 2017-02-28
Red Hat Enterprise Linux Long Life (v. 5.9 server) (kernel) RHSA-2017:0346 2017-02-28

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 kernel Not affected
Red Hat Enterprise Linux 6 kernel Not affected
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.


This issue was discovered by Wade Mealing (Red Hat Product Security).
Last Modified