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Fencer Vulns
medium 5.5

CVE-2017-12193 json

The assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which…

published 2017-11-22 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-3768

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 assoc_array_insert_into_terminal_node function in lib/assoc_array.c in the Linux kernel before 4.13.11 mishandles node splitting, which allows local users to cause a denial of service (NULL pointer dereference and panic) via a crafted application, as demonstrated by the keyring key type, and key addition and link creation operations.

Patch / fix

  • linux linux_kernel 4.13.11
  • linux Debian 14, Debian 13, Debian 12 4.13.13-1

debian advisories DEBIAN-CVE-2017-12193

  • linux Ubuntu 14.04 LTS 3.13.0-153.203
  • linux Ubuntu 16.04 LTS 4.4.0-103.126
  • linux-aws Ubuntu 14.04 LTS 4.4.0-1005.5
  • linux-aws Ubuntu 16.04 LTS 4.4.0-1043.52
  • linux-gcp Ubuntu 16.04 LTS 4.13.0-1002.5
  • linux-hwe Ubuntu 16.04 LTS 4.13.0-32.35~16.04.1
  • linux-kvm Ubuntu 16.04 LTS 4.4.0-1012.17
  • linux-oem Ubuntu 16.04 LTS 4.13.0-1010.11

ubuntu advisories UBUNTU-CVE-2017-12193

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 1:3.10.0-693.17.1.rt56.604.el6rt
  • kernel-rt-trace enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
  • kernel-rt-vanilla enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
  • kernel-rt-firmware enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
  • kernel-rt-debuginfo-common-x86_64 enterprise mrg 2 1:3.10.0-693.17.1.rt56.604.el6rt
  • kernel-rt RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7
  • kernel-rt-kvm RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7
  • kernel-rt-trace RHEL 7 EXTRAS_RT 3.10.0-693.17.1.rt56.636.el7

red hat advisories RHSA-2018:0181RHSA-2018:0152RHSA-2018:0151

  • kernel-rt SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-syms-rt SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-rt_debug SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-source-rt SLE Real Time 12 SP2 4.4.104-24.1
  • kernel-syms SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 4.4.103-92.53.1
  • kernel-source SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 4.4.103-92.53.1
  • kernel-default SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +3 more 4.4.103-92.53.1
  • kernel-obs-build SLE Software Development Kit 12 SP2 4.4.103-92.53.1

suse advisories SUSE-SU-2018:0213-1SUSE-SU-2017:3410-1SUSE-SU-2017:3398-1SUSE-SU-2017:3249-1SUSE-SU-2017:3210-1

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-2017-12193 updated cvss 4.7

kernel: Null pointer dereference due to incorrect node-splitting in assoc_array implementation

  • Red Hat Enterprise Linux 7 perf, kernel, kernel-alt, python-perf, kernel-kdump, kernel-tools, +3 more
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7 Red Hat Enterprise Linux ComputeNode (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7
    fixed: vendor fix RHSA-2018:0151
  • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-693.17.1.rt56.636.el7, kernel-rt-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debug-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace-kvm 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.636.el7 Red Hat Enterprise Linux Realtime (v. 7) kernel-rt 3.10.0-693.17.1.rt56.636.el7, kernel-rt-trace 3.10.0-693.17.1.rt56.636.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.636.el7
    fixed: vendor fix RHSA-2018:0152
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-kdump 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, +6 more Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-693.17.1.el7, kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.17.1.el7 Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-693.17.1.el7, kernel 3.10.0-693.17.1.el7, python-perf 3.10.0-693.17.1.el7, kernel-tools 3.10.0-693.17.1.el7, kernel-tools-libs 3.10.0-693.17.1.el7, kernel-abi-whitelists 3.10.0-693.17.1.el7, +1 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-693.17.1.el7
    fixed: vendor fix RHSA-2018:0151
  • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-trace 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-vanilla 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-firmware 3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-debuginfo-common-x86_64 3.10.0-693.17.1.rt56.604.el6rt
    fixed: vendor fix RHSA-2018:0181
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more
    not affected: vulnerable code not present

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, 2026-11-08).

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 since 3.13 up to 4.14 (not including)

Classification

Weakness
Technology feeds

References

Sources

Fencer Vulns 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.