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Vulnerability record · CVE-2017-5972 · published 14 February 2017

CVE-2017-5972: Linux kernel uncontrolled resource consumption vulnerability

Linux · Linux Kernel

The TCP stack in the Linux kernel 3.x does not properly implement a SYN cookie protection mechanism for the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many TCP SYN packets, as demonstrated by an attack against the kernel-3.10.0 package in CentOS Linux 7. NOTE: third parties have been unable to discern any relationship between the GitHub Engineering finding and the Trigemini.c attack code.

7.5 CVSS 3.1 High EPSS 24% · top 2.2% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score, v2 7.8
24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

The TCP stack in the Linux kernel 3.x does not properly implement a SYN cookie protection mechanism for the case of a fast network connection, which allows remote attackers to cause a denial of service (CPU consumption) by sending many TCP SYN packets, as demonstrated by an attack against the kernel-3.10.0 package in CentOS Linux 7. NOTE: third parties have been unable to discern any relationship between the GitHub Engineering finding and the Trigemini.c attack code.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/oss-sec/2017/q1/573 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/96231 Third Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/cve-2017-5972 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1422081 Issue TrackingThird Party Advisory
https://cxsecurity.com/issue/WLB-2017020112 ExploitThird Party Advisory
https://githubengineering.com/syn-flood-mitigation-with-synsanity/ Third Party Advisory
https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html ExploitThird Party AdvisoryVDB Entry
https://security-tracker.debian.org/tracker/CVE-2017-5972 Third Party Advisory
https://www.exploit-db.com/exploits/41350/ Third Party AdvisoryVDB Entry
http://seclists.org/oss-sec/2017/q1/573 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/96231 Third Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/cve-2017-5972 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1422081 Issue TrackingThird Party Advisory
https://cxsecurity.com/issue/WLB-2017020112 ExploitThird Party Advisory
https://githubengineering.com/syn-flood-mitigation-with-synsanity/ Third Party Advisory
https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html ExploitThird Party AdvisoryVDB Entry
https://security-tracker.debian.org/tracker/CVE-2017-5972 Third Party Advisory
https://www.exploit-db.com/exploits/41350/ Third Party AdvisoryVDB Entry

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Source: NIST National Vulnerability Database (record CVE-2017-5972), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.