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TI-2017-08983 Aliases CVE-2017-12193GHSA-7c55-6mqj-q569

NULL pointer dereference in Linux kernel since 3.13 up to 4.14

Priority LOW 25CWE-476Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 11 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

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.

Why it matters now

EPSS 0.00451 39th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 11 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Linux kernel since 3.13 up to 4.14 (not including)Linux kernel since 3.13 up to 4.14 (not including)—No fix listedCNA
  • Linux kernel since 3.13 up to 4.14 (not including) Vendor— Affected Linux kernel since 3.13 up to 4.14 (not including) Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*before 4.13.11VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions before 4.13.11 Vulnerable ·Linux

Remediation

Red Hat 3 advisories

  • RHSA-2018:0181 Released 2018-01-25 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat MRG Realtime for RHEL 6 Server v.2 kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-debug-1:3.10.0-693.17.1.rt56.604.el6rt, kernel-rt-debug-devel-1:3.10.0-693.17.1.rt56.604.el6rt +7
  • RHSA-2018:0152 Released 2018-01-25 · Red Hat rating Important
    kernel-rt security and bug fix update
    • Red Hat Enterprise Linux Realtime (v. 7) kernel-rt-3.10.0-693.17.1.rt56.636.el7, kernel-rt-debug-3.10.0-693.17.1.rt56.636.el7, kernel-rt-debug-devel-3.10.0-693.17.1.rt56.636.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-693.17.1.rt56.636.el7, kernel-rt-debug-3.10.0-693.17.1.rt56.636.el7, kernel-rt-debug-devel-3.10.0-693.17.1.rt56.636.el7 +7
  • RHSA-2018:0151 Released 2018-01-25 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) kernel-3.10.0-693.17.1.el7, kernel-abi-whitelists-3.10.0-693.17.1.el7, kernel-debug-3.10.0-693.17.1.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.17.1.el7
    • Red Hat Enterprise Linux ComputeNode (v. 7) kernel-3.10.0-693.17.1.el7, kernel-abi-whitelists-3.10.0-693.17.1.el7, kernel-debug-3.10.0-693.17.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.17.1.el7
    • Red Hat Enterprise Linux Server (v. 7) kernel-3.10.0-693.17.1.el7, kernel-abi-whitelists-3.10.0-693.17.1.el7, kernel-bootwrapper-3.10.0-693.17.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-693.17.1.el7, kernel-tools-libs-devel-3.10.0-693.17.1.el7
    • Red Hat Enterprise Linux Workstation (v. 7) kernel-3.10.0-693.17.1.el7, kernel-abi-whitelists-3.10.0-693.17.1.el7, kernel-debug-3.10.0-693.17.1.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-693.17.1.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux Realtime (v. 7)Fixed RHSA-2018:0152
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2018:0151
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2018:0152
Red Hat MRG Realtime for RHEL 6 Server v.2Fixed RHSA-2018:0181
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-12193
  2. 2026-10-03 Alias added: GHSA-7c55-6mqj-q569

References

Patch 2

Advisory 3

Other 2

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences