CVE-2019-20398 (GCVE-0-2019-20398)

Vulnerability from cvelistv5 – Published: 2020-01-22 00:00 – Updated: 2024-08-05 02:39
VLAI
Summary
A NULL pointer dereference is present in libyang before v1.0-r3 in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to parse untrusted input yang files may crash.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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    "redhat_vex": {
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      "current_release_date": "2025-11-21T16:07:05+00:00",
      "cve": "CVE-2019-20398",
      "id": "CVE-2019-20398",
      "initial_release_date": "2019-04-29T00:00:00+00:00",
      "product_status:fixed": "26",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libyang: NULL pointer dereference in function lys_extension_instances_free()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-20398.json",
      "version": "3"
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    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-05-27T06:02:25Z",
      "cve": "CVE-2019-20398",
      "id": "CVE-2019-20398",
      "initial_release_date": "2023-02-15T04:05:21Z",
      "product_status:recommended": "1",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-20398",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-20398.json",
      "version": "8"
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}



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