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.
CVE-2017-12193
MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence
Score 5.5 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 5.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0
A fix is available — apply it.
- CVSS v3
- 5.5
- EG Score
- 5.5(medium)
- EPSS
- 36.4%
- KEV
- Not listed
Published
November 22, 2017
Last Modified
May 13, 2026
References (16)
- secalert@redhathttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- secalert@redhathttp://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
- secalert@redhathttp://www.securityfocus.com/bid/101678
- secalert@redhathttps://access.redhat.com/errata/RHSA-2018:0151
- secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1501215
- secalert@redhathttps://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- secalert@redhathttps://usn.ubuntu.com/3698-1/
- secalert@redhathttps://usn.ubuntu.com/3698-2/
- af854a3a-2127-422b-91ae-364da2661108http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- af854a3a-2127-422b-91ae-364da2661108http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/101678
- af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:0151
- af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1501215
- af854a3a-2127-422b-91ae-364da2661108https://github.com/torvalds/linux/commit/ea6789980fdaa610d7eb63602c746bf6ec70cd2b
- af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/3698-1/
Patch Availability(9)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | linux-image-extra-4.13.0-1002-gcp (4.13.0-1002.5) @ xenial | 2026-05-22 | ubuntu |
| ubuntu | linux-image-extra-4.4.0-103-generic (4.4.0-103.126~14.04.1) @ trusty | 2026-05-22 | ubuntu |
| ubuntu | linux-image-generic-lts-trusty (3.13.0.153.143) @ precise | 2026-05-22 | ubuntu |
| ubuntu | linux-image-extra-4.4.0-103-generic (4.4.0-103.126) @ xenial | 2026-05-22 | ubuntu |
| ubuntu | linux-image-raspi2 (4.13.0.1008.6) @ artful | 2026-05-22 | ubuntu |
| ubuntu | linux-image-extra-3.13.0-153-generic (3.13.0-153.203) @ trusty | 2026-05-22 | ubuntu |
| redhat | kernel-rt-1:3.10.0-693.17.1.rt56.604.el6rt | 2018-01-25 | redhat |
| redhat | kernel-rt-0:3.10.0-693.17.1.rt56.636.el7 | 2018-01-25 | redhat |
| redhat | kernel-0:3.10.0-693.17.1.el7 | 2018-01-25 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Frequently asked(5)
What is CVE-2017-12193?
CVE-2017-12193 is a medium vulnerability published on November 22, 2017. The assocarrayinsertintoterminalnode function in lib/assocarray.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…
When was CVE-2017-12193 disclosed?
CVE-2017-12193 was first published in the National Vulnerability Database on November 22, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-12193 actively exploited?
CVE-2017-12193 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2017-12193?
CVE-2017-12193 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2017-12193?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-12193, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
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