CVE-2017-2634
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 5.15% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-476, CWE-119
- Affected
- linux/linux kernel · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
EPSS 5.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://rhn.redhat.com/errata/RHSA-2017-0323.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0346.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0347.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96529Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037909Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51Patch, Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0323.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0346.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0347.htmlThird Party Advisory
- http://www.securityfocus.com/bid/96529Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037909Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2634Issue Tracking, Patch, Third Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f53dc67c5e7babafe239b93a11678b0e05bead51Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.