What’s Vulnerable › Vulnerabilities
CVE-2017-2634
- Severity: high (CVSS 7.5 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 5.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2018-07-27 · updated 2026-06-17
- Weakness: CWE-476
Description
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 kernel: before 2.6.22.17 — fixed in 2.6.22.17
- RedHat Enterprise Linux Desktop: 5.0
- RedHat Enterprise Linux Server: 5.0
- RedHat Enterprise Linux Server Aus: 5.6, 5.9
- RedHat Enterprise Linux Workstation: 5.0
How to fix
Upgrade to a fixed version: Linux kernel 2.6.22.17. Check the vendor advisory for mitigations.
References
- http://rhn.redhat.com/errata/RHSA-2017-0323.html
- http://rhn.redhat.com/errata/RHSA-2017-0346.html
- http://rhn.redhat.com/errata/RHSA-2017-0347.html
- http://www.securityfocus.com/bid/96529
- http://www.securitytracker.com/id/1037909
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51
- http://rhn.redhat.com/errata/RHSA-2017-0323.html
- http://rhn.redhat.com/errata/RHSA-2017-0346.html
- http://rhn.redhat.com/errata/RHSA-2017-0347.html
- http://www.securityfocus.com/bid/96529
- http://www.securitytracker.com/id/1037909
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