Skip to content
Fencer Intel
medium 5.5

CVE-2017-7542 json

The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local users to cause a denial of servi…

published 2017-07-21 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16554

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 39%
public exploits
0
none known

Summary

The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local users to cause a denial of service (integer overflow and infinite loop) by leveraging the ability to open a raw socket.

Patch / fix

  • linux Debian 14, Debian 13, Debian 12 4.12.6-1

debian advisories DEBIAN-CVE-2017-7542

  • linux Ubuntu 14.04 LTS 3.13.0-142.191
  • linux Ubuntu 16.04 LTS 4.4.0-96.119
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1035.44
  • linux-gcp Ubuntu 16.04 LTS 4.13.0-1002.5
  • linux-gke Ubuntu 16.04 LTS 4.4.0-1031.31
  • linux-hwe Ubuntu 16.04 LTS 4.13.0-32.35~16.04.1
  • linux-azure Ubuntu 16.04 LTS 4.13.0-1005.7
  • linux-raspi2 Ubuntu 16.04 LTS 4.4.0-1074.82

ubuntu advisories UBUNTU-CVE-2017-7542

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel-rt enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.5.2.rt56.592.el6rt
  • kernel-rt RHEL 7 EXTRAS_RT 3.10.0-693.5.2.rt56.626.el7
  • kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-693.5.2.rt56.626.el7
  • kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-693.5.2.rt56.626.el7

red hat advisories RHSA-2017:2918RHSA-2017:2931RHSA-2018:0169RHSA-2017:2930

  • kernel-rt SLE Real Time 12 SP2 4.4.88-18.1
  • kernel-syms-rt SLE Real Time 12 SP2 4.4.88-18.1
  • kernel-rt_debug SLE Real Time 12 SP2 4.4.88-18.1
  • kernel-source-rt SLE Real Time 12 SP2 4.4.88-18.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.61-52.101.1
  • kernel-ec2 SLE Module for Public Cloud 12 3.12.74-60.64.63.1
  • kernel-xen SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1
  • kernel-syms SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 3.12.74-60.64.63.1

suse advisories SUSE-SU-2017:2956-1SUSE-SU-2017:2920-1SUSE-SU-2017:2908-1SUSE-SU-2017:2869-1SUSE-SU-2017:2525-1SUSE-SU-2017:2389-1

  • kernel-source openSUSE Tumbleweed 5.14.6-1.4
  • kernel-source openSUSE Tumbleweed 6.6.17-1.1

opensuse advisories openSUSE-SU-2024:10728-1openSUSE-SU-2024:13704-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-7542 updated cvss 5.5

kernel: Integer overflow in ip6_find_1stfragopt() causes infinite loop

  • Red Hat Enterprise Linux 5 kernel
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 7 perf, kernel, python-perf, kernel-kdump, kernel-tools, kernel-tools-libs, +2 more
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, kernel-abi-whitelists 3.10.0-693.5.2.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, kernel-abi-whitelists 3.10.0-693.5.2.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Desktop (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6 Red Hat Enterprise Linux Desktop Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-693.5.2.rt56.626.el7, kernel-rt-kvm 3.10.0-693.5.2.rt56.626.el7, kernel-rt-trace 3.10.0-693.5.2.rt56.626.el7, kernel-rt-debug-kvm 3.10.0-693.5.2.rt56.626.el7, kernel-rt-trace-kvm 3.10.0-693.5.2.rt56.626.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.5.2.rt56.626.el7
    fixed: vendor fix RHSA-2017:2931
  • Red Hat Enterprise Linux HPC Node (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6 Red Hat Enterprise Linux HPC Node Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-693.5.2.rt56.626.el7, kernel-rt-trace 3.10.0-693.5.2.rt56.626.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.5.2.rt56.626.el7
    fixed: vendor fix RHSA-2017:2931
  • Red Hat Enterprise Linux Server (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-kdump 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-bootwrapper 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, +4 more
    fixed: vendor fix RHSA-2018:0169
show 8 more
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-kdump 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, +6 more
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Server Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-ppc64 2.6.32-696.20.1.el6, kernel-debuginfo-common-s390x 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-693.5.2.el7, kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.5.2.el7
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Workstation (v. 6) perf 2.6.32-696.20.1.el6, kernel 2.6.32-696.20.1.el6, kernel-firmware 2.6.32-696.20.1.el6, kernel-abi-whitelists 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-693.5.2.el7, kernel 3.10.0-693.5.2.el7, python-perf 3.10.0-693.5.2.el7, kernel-tools 3.10.0-693.5.2.el7, kernel-tools-libs 3.10.0-693.5.2.el7, kernel-abi-whitelists 3.10.0-693.5.2.el7, +1 more
    fixed: vendor fix RHSA-2017:2930
  • Red Hat Enterprise Linux Workstation Optional (v. 6) python-perf 2.6.32-696.20.1.el6, kernel-debuginfo-common-i686 2.6.32-696.20.1.el6, kernel-debuginfo-common-x86_64 2.6.32-696.20.1.el6
    fixed: vendor fix RHSA-2018:0169
  • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.5.2.el7
    fixed: vendor fix RHSA-2017:2930
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-trace 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-vanilla 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-firmware 3.10.0-693.5.2.rt56.592.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.5.2.rt56.592.el6rt
    fixed: vendor fix RHSA-2017:2918

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.9 AV:L/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • n/a Linux kernel versions up to and including 4.12

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound
  • CWE-835 Loop with Unreachable Exit Condition
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.