CVE-2019-20392
libyang: invalid memory access when if-feature statement is used inside a list key node
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 7, 2019
Updated · November 22, 2025
Description
An invalid memory access flaw was discovered in libyang in the function resolve_feature_value() when an if-feature statement is used inside a list key node and the feature used is not defined. Applications that use libyang to process untrusted input YANG files may crash.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer