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CVE-2017-12193· NVD / CVE Program· CNA redhat

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

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.45% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: linux (Debian:12) 4.13.13-1; kernel (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.17.1.el7; kernel-abi-whitelists (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.17.1.el7.

Low priority for now. Upgrade to linux (Debian:12) 4.13.13-1; kernel (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.17.1.el7; kernel-abi-whitelists (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.17.1.el7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.5 · v3.0—No exploit Fix available
Published
Nov 22, 2017
Updated
Jun 16, 2026
EPSS
0.4% · 38th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernelbefore 4.13.11

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Linux kernel since 3.13 up to 4.14 (not including)

    • Linux kernel since 3.13 up to 4.14 (not including)affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 4.13.13-14.13.13-1
Red Hat:enterprise_linux:7::clientkernelbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-abi-whitelistsbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-debugbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-debug-debuginfobefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-debug-develbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-debuginfobefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-debuginfo-common-x86_64before 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-develbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-docbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-headersbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-toolsbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-tools-debuginfobefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-tools-libsbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientkernel-tools-libs-develbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientperfbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientperf-debuginfobefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientpython-perfbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::clientpython-perf-debuginfobefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::serverkernel-bootwrapperbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::serverkernel-debuginfo-common-ppc64before 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::serverkernel-debuginfo-common-ppc64lebefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::serverkernel-debuginfo-common-s390xbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7
Red Hat:enterprise_linux:7::serverkernel-kdumpbefore 0:3.10.0-693.17.1.el70:3.10.0-693.17.1.el7

+62

Same product

linux: all records

Other highest-scoring records for the same primary product.

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    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now

Published before and after this one in the same product

  • ← EarlierCVE-2017-15115Nov 15, 2017 · The sctp_do_peeloff function in net/sctp/socket.c in the Linux kernel before 4.14 does not check whether the intended netns is used in a pee
    31Monitor
  • ← EarlierCVE-2017-12190Nov 22, 2017 · The bio_map_user_iov and bio_unmap_user functions in block/bio.c in the Linux kernel before 4.13.8 do unbalanced refcounting when a SCSI I/O
    26Monitor
  • Later →CVE-2017-16939Nov 24, 2017 · The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or caus
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux4.13.13-1 · Debian:12Package registry (OSV)
red hat:kernel0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-abi-whitelists0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug-debuginfo0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug-devel0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debuginfo0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debuginfo-common-x86_640:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-devel0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-doc0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-headers0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-tools0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-tools-debuginfo0:3.10.0-693.17.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
suse:kernel-default3.12.74-60.64.66.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
suse:kernel-docs4.4.103-6.33.1 · SUSE:Linux Enterprise Software Development Kit 12 SP3Package registry (OSV)
suse:kernel-ec23.12.74-60.64.66.1 · SUSE:Linux Enterprise Module for Public Cloud 12Package registry (OSV)
suse:kernel-obs-build4.4.103-6.33.1 · SUSE:Linux Enterprise Software Development Kit 12 SP3Package registry (OSV)
suse:kernel-rt4.4.104-24.1 · SUSE:Linux Enterprise Real Time 12 SP2Package registry (OSV)
suse:kernel-source3.12.74-60.64.66.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
suse:kernel-syms3.12.74-60.64.66.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
suse:kernel-xen3.12.74-60.64.66.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
suse:kgraft-patch-SLE12_Update_291-5.1 · SUSE:Linux Enterprise Server 12-LTSSPackage registry (OSV)
suse:kgraft-patch-SLE12-SP1_Update_231-2.1 · SUSE:OpenStack Cloud 6Package registry (OSV)
suse:kgraft-patch-SLE12-SP2_Update_161-3.3.1 · SUSE:Linux Enterprise Live Patching 12Package registry (OSV)
suse:kgraft-patch-SLE12-SP3_Update_61-4.3.1 · SUSE:Linux Enterprise Live Patching 12 SP3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records