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 attackers to cause a denial of service (use-after-free and memory corruption) or possibly have unspecified other…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 52.8%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 52.84% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel · debian/debian linux · arista/eos · f5/arx · suse/caas platform · suse/linux enterprise debuginfo · suse/linux enterprise module for public cloud · suse/linux enterprise point of sale · suse/openstack cloud · opensuse/leap · suse/linux enterprise desktop · suse/linux enterprise high availability · suse/linux enterprise high availability extension · suse/linux enterprise live patching · suse/linux enterprise real time extension · suse/linux enterprise server · suse/linux enterprise software development kit · suse/linux enterprise workstation extension · openstack/cloud magnum orchestration · canonical/ubuntu linux · +9 more
- Source
- cve@mitre.org
EPSS 52.8% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901Patch, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00008.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00013.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00015.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00038.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00047.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00067.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00070.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00072.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2018-04/msg00014.htmlMailing List, Third Party Advisory
- http://patchwork.ozlabs.org/patch/746618/Patch, Third Party Advisory
- http://www.securityfocus.com/bid/102367Broken Link, Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/USN-3583-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3583-2Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0676Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1062Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1130Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1170Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1319Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:1737Third Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765Issue Tracking, Third Party Advisory
- https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901Patch, Third Party Advisory
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing List, Third Party Advisory
- https://lkml.org/lkml/2017/4/2/13Third Party Advisory
- https://support.f5.com/csp/article/K18352029Third Party Advisory
- https://usn.ubuntu.com/3583-1/Third Party Advisory
- https://usn.ubuntu.com/3583-2/Third Party Advisory
- https://www.arista.com/en/support/advisories-notices/security-advisories/4577-security-advisory-34Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.