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CVE-2017-18017
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…
- 9.8CriticalCVSS base score
- 52.8%Exploitation in 30 daysEPSS · top 1.0% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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
ID reserved
By mitre
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 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 52.8% · top 1.0% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
n/a
- affected n/a
References
33
- DSA-4187 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- USN-3583-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- http://patchwork.ozlabs.org/patch/746618/ (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2018:1737 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.36 (opens in a new tab)x_refsource_MISCx_transferred
- https://lkml.org/lkml/2017/4/2/13 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2018:1062 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2018:1319 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-3583-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- RHSA-2018:0676 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2018:1170 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901 (opens in a new tab)x_refsource_MISCx_transferred
- RHSA-2018:1130 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- [debian-lts-announce] 20180502 [SECURITY] [DLA 1369-1] linux security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 102367 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- SUSE-SU-2018:0834 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2018:0848 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2018:0383 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-3583-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://support.f5.com/csp/article/K18352029 (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SU-2018:0555 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- openSUSE-SU-2018:0408 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2018:0986 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2018:0416 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2018:0482 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2018:0841 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-3583-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- SUSE-SU-2018:0660 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://www.arista.com/en/support/advisories-notices/security-advisories/4577-security-advisory-34 (opens in a new tab)x_refsource_MISCx_transferred
- https://security.netapp.com/advisory/ntap-20250103-0010/ (opens in a new tab)
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)
- EUVD EUVD-2017-9157 (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)
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[](https://cveledger.app/cve/CVE-2017-18017)Record last updated .