Is CVE-2017-18017 actively exploited?

CVE-2017-18017 has no public evidence of in-the-wild exploitation as of 2025-01-03.

What is the CVSS score for CVE-2017-18017?

CVE-2017-18017 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2017-18017?

Patch guidance is available from linux security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2017-18017.

Fix CVE-2017-18017 - CRITICAL linux linux kernel

Q: Which products are affected by CVE-2017-18017?

66 products: linux linux kernel, linux linux kernel, linux linux kernel, linux linux kernel, linux linux kernel, and 61 more.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-416 · Use After Free

Metadata

Primary Vendor: LINUX
Published: 1/3/2018
Last Modified: 1/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

linux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kernellinux : linux_kerneldebian : debian_linuxdebian : debian_linuxarista : eosf5 : arxsuse : caas_platformsuse : linux_enterprise_debuginfosuse : linux_enterprise_debuginfosuse : linux_enterprise_module_for_public_cloudsuse : linux_enterprise_point_of_salesuse : openstack_cloudopensuse : leapsuse : linux_enterprise_desktopsuse : linux_enterprise_desktopsuse : linux_enterprise_high_availabilitysuse : linux_enterprise_high_availabilitysuse : linux_enterprise_high_availability_extensionsuse : linux_enterprise_live_patchingsuse : linux_enterprise_live_patchingsuse : linux_enterprise_real_time_extensionsuse : linux_enterprise_real_time_extensionsuse : linux_enterprise_real_time_extensionsuse : linux_enterprise_serversuse : linux_enterprise_serversuse : linux_enterprise_serversuse : linux_enterprise_serversuse : linux_enterprise_serversuse : linux_enterprise_serversuse : linux_enterprise_serversuse : linux_enterprise_serversuse : linux_enterprise_software_development_kitsuse : linux_enterprise_software_development_kitsuse : linux_enterprise_software_development_kitsuse : linux_enterprise_workstation_extensionsuse : linux_enterprise_workstation_extensionopenstack : cloud_magnum_orchestrationcanonical : ubuntu_linuxcanonical : ubuntu_linuxredhat : mrg_realtimeredhat : enterprise_linux_desktopredhat : enterprise_linux_desktopredhat : enterprise_linux_eusredhat : enterprise_linux_eusredhat : enterprise_linux_eusredhat : enterprise_linux_eusredhat : enterprise_linux_for_real_timeredhat : enterprise_linux_for_real_time_for_nfvredhat : enterprise_linux_serverredhat : enterprise_linux_serverredhat : enterprise_linux_server_ausredhat : enterprise_linux_server_ausredhat : enterprise_linux_server_ausredhat : enterprise_linux_server_ausredhat : enterprise_linux_server_tusredhat : enterprise_linux_server_tusredhat : enterprise_linux_server_tusredhat : enterprise_linux_server_tusredhat : enterprise_linux_workstationredhat : enterprise_linux_workstation

Remediation Guidance

Executive Summary

View on NIST NVD