CVE-2019-20395

libyang: stack-overflow when parsing yang files with self-referential union types

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Severity

Low

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · March 8, 2019

Updated · November 22, 2025

Description

A stack-overflow flaw was found in libyang due to a self-referential union type containing leafrefs. Applications that use libyang to process untrusted input YANG files may crash while processing malformed files.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE-674 · Uncontrolled Recursion