CVE-2017-5972
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…
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Public exploit
A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system.
- 41350 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Timeline
ID reserved
By mitre
- 2 days later
· 2 days later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 23.9% · top 2.2% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
n/a
- affected n/a
References (9)
- http://seclists.org/oss-sec/2017/q1/573 (opens in a new tab)x_refsource_MISCx_transferred
- 41350 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1422081 (opens in a new tab)x_refsource_MISCx_transferred
- https://cxsecurity.com/issue/WLB-2017020112 (opens in a new tab)x_refsource_MISCx_transferred
- https://security-tracker.debian.org/tracker/CVE-2017-5972 (opens in a new tab)x_refsource_MISCx_transferred
- https://githubengineering.com/syn-flood-mitigation-with-synsanity/ (opens in a new tab)x_refsource_MISCx_transferred
- 96231 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://packetstormsecurity.com/files/141083/CentOS7-Kernel-Denial-Of-Service.html (opens in a new tab)x_refsource_MISCx_transferred
- https://access.redhat.com/security/cve/cve-2017-5972 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-5972)Record last updated .