CVE-2017-2634: Linux Kernel

High severity, CVSS 7.5. EPSS: 5.2% chance of exploitation in the next 30 days.

It was found that the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation before 2.6.22.17 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.

Affected products

• Linux Linux Kernel: before 2.6.22.17 (fixed in 2.6.22.17)
• Red Hat Enterprise Linux Desktop: version 5.0 only
• Red Hat Enterprise Linux Server: version 5.0 only
• Red Hat Enterprise Linux Server Aus: version 5.6 only; version 5.9 only
• Red Hat Enterprise Linux Workstation: version 5.0 only

Published 2018-07-27. Last modified 2026-06-17.