CVE-2017-18017
Critical
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 impact by leveraging the presence of xt_TCPMSS in an iptables action.
Exploit probability
52.8%
Published
January 3, 2018
Required by
Not available
Last source change
April 2, 2026
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2017-18017
View original source
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.
05 / REFERENCES
Further evidence
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2638fd0f92d4397884fd991d8f4925cb3f081901
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00013.html
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2018-02/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00067.html
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00070.html
- http://lists.opensuse.org/opensuse-security-announce/2018-03/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2018-04/msg00014.html
- http://patchwork.ozlabs.org/patch/746618/
- http://www.securityfocus.com/bid/102367
- http://www.ubuntu.com/usn/USN-3583-1
- http://www.ubuntu.com/usn/USN-3583-2
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/errata/RHSA-2018:1130
- https://access.redhat.com/errata/RHSA-2018:1170
- https://access.redhat.com/errata/RHSA-2018:1319
- https://access.redhat.com/errata/RHSA-2018:1737
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1739765
- https://github.com/torvalds/linux/commit/2638fd0f92d4397884fd991d8f4925cb3f081901
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://lkml.org/lkml/2017/4/2/13
- https://security.netapp.com/advisory/ntap-20250103-0010/
- https://support.f5.com/csp/article/K18352029
- https://usn.ubuntu.com/3583-1/
- https://usn.ubuntu.com/3583-2/
- https://www.arista.com/en/support/advisories-notices/security-advisories/4577-security-advisory-34
- https://www.debian.org/security/2018/dsa-4187
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.36