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{"affected_release": [{"advisory": "RHEA-2021:1906", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "libyang-0:1.0.184-1.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}], "bugzilla": {"description": "libyang: NULL pointer dereference in function lys_extension_instances_free()", "id": "1793935", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1793935"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-476", "details": ["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.", "A NULL pointer dereference flaw occurs in libyang in the function lys_extension_instances_free() due to a copy of unresolved extensions in lys_restr_dup(). Applications that use libyang to process untrusted input YANG files may crash."], "name": "CVE-2019-20398", "public_date": "2019-04-29T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-20398\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-20398"], "threat_severity": "Low", "upstream_fix": "libyang 1.0-r3"}