What is CVE-2018-1065?

CVE-2018-1065 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 4.7/10. Published 2018-03-02.

How severe is CVE-2018-1065?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Is CVE-2018-1065 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

NULL pointer dereference in Linux Kernel

CVE-2018-1065

The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and ip6t_do_table in net/ipv6/netfilter/ip6_tables.c.

Published 2018-03-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (35.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Linux Kernel
Linux Kernel 4.15.0-Rc9 — versions Linux kernel 4.15.0-rc9

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.securitytracker.com/id/1040446 (VDB Entry, Third Party Advisory, vdb-entry)
usn.ubuntu.com/3654-1/ (vendor-advisory)
www.debian.org/security/2018/dsa-4188 (vendor-advisory)
access.redhat.com/errata/RHSA-2018:2948 (vendor-advisory)
bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
usn.ubuntu.com/3654-2/ (vendor-advisory)
lists.openwall.net/netdev/2018/01/27/46 (Third Party Advisory)
usn.ubuntu.com/3656-1/ (vendor-advisory)
patchwork.ozlabs.org/patch/870355/ (Patch, Third Party Advisory)
github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-1065?: CVE-2018-1065 is a medium-severity vulnerability in Linux Kernel, classified under NULL Pointer Dereference. CVSS score: 4.7/10. Published 2018-03-02.
How severe is CVE-2018-1065?: Medium severity. CVSS v3 base score is 4.7 out of 10.
Is CVE-2018-1065 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.