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CVE-2021-28905

libyang: reachable assertion in lys_node_free()

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · March 8, 2021

Updated · June 27, 2026

Description

A flaw was found in libyang. An assertion in lys_node_free function may be reached or, if assertions are disabled, a NULL pointer dereference could be triggered allowing a remote attacker to crash an application that uses libyang with user-controlled YIN data. The highest threat from this vulnerability is the service availability.

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 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-617 · Reachable Assertion