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Category:   OS (Linux)  >   Linux Kernel Vendors:   kernel.org
Linux Kernel DCCP Processing Flaw Lets Remote Users Cause the Target System to Crash
SecurityTracker Alert ID:  1037909
SecurityTracker URL:  http://securitytracker.com/id/1037909
CVE Reference:   CVE-2017-2634   (Links to External Site)
Date:  Feb 27 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in the Linux kernel. A remote user can cause the target system to crash.

The Datagram Congestion Control Protocol (DCCP) implementation uses the IPv4-only inet_sk_rebuild_header() function for both IPv4 and IPv6 DCCP connections. A remote user can send a specially crafted DCCP reset packet via IPv6 to the target DCCP server to trigger a memory corruption error and cause the target kernel to crash.

Wade Mealing (Red Hat Product Security) reported this vulnerability.

Impact:   A remote user can cause the target kernel to crash.
Solution:   The vendor has issued a source code fix, available at:

https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51

Vendor URL:  www.kernel.org/ (Links to External Site)
Cause:   Access control error, State error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 28 2017 (Oracle Issues Fix for Oracle Linux) Linux Kernel DCCP Processing Flaw Lets Remote Users Cause the Target System to Crash
Oracle has issued a fix for Oracle Linux 5.
Feb 28 2017 (Red Hat Issues Fix) Linux Kernel DCCP Processing Flaw Lets Remote Users Cause the Target System to Crash
Red Hat has issued a fix for Red Hat Enterprise Linux 5.6.



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