CVE-2017-18017
No exploitation reported by the sources we read.
- Published2018-01-03
- Fixed in4.11 · 4.9.36 · 4.4.76 · 4.1.43 · 3.18.60 · 3.16.54
- WeaknessCWE-416
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
The tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c in the Linux kernel before 4.11, and 4.9.x before 4.9.36, allows remote attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other impact by leveraging the presence of xt_TCPMSS in an iptables action.
Timeline
dates in UTC- 2018-01-0306:29CVE publishedNVD
- 2026-10-2319:23EPSS crossed 10 %FIRST EPSS
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-18017?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-18017?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 4.x | ≥ 4.10, < 4.11 | 4.11 | NVD |
| 4.x | ≥ 4.5, < 4.9.36 | 4.9.36 | NVD |
| 4.x | ≥ 4.2, < 4.4.76 | 4.4.76 | NVD |
| 4.1 | ≥ 3.19, < 4.1.43 | 4.1.43 | NVD |
| 3.x | ≥ 3.17, < 3.18.60 | 3.18.60 | NVD |
| 3.x | ≥ 3.11, < 3.16.54 | 3.16.54 | NVD |
| 3.x | ≥ 3.3, < 3.10.108 | 3.10.108 | NVD |
| 3.2 | ≥ 3.2, < 3.2.99 | 3.2.99 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.3 | = 7.3 | no fix published | NVD |
| 7.4 | = 7.4 | no fix published | NVD |
| 7.6 | = 7.6 | no fix published | NVD |
| 7.7 | = 7.7 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 7.3 | = 7.3 | no fix published | NVD |
| 7.4 | = 7.4 | no fix published | NVD |
| 7.6 | = 7.6 | no fix published | NVD |
| 7.7 | = 7.7 | no fix published | NVD |
26 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Linux linux kernel to 4.11 · 4.9.36 · 4.4.76 · 4.1.43 · 3.18.60 · 3.16.54 · 3.10.108 · 3.2.99
Advisories and patches
- git.kernel.orgPatch
- patchwork.ozlabs.orgPatch
- github.comPatch
- www.arista.comMitigation
- www.kernel.orgRelease Notes · Vendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.010read 2026-10-23
- NVDweakness (CWE)CWE-416read 2026-10-23
- FIRST EPSSEPSS score52.8 %read 2026-10-23
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2018-01-03
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2017-18017?
Is CVE-2017-18017 actively exploited?
What is the CVSS score for CVE-2017-18017?
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Related vulnerabilities
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