{"action":"Upgrade libyang to 3.4.2+dfsg-2 or later.","affected":[{"fixed":"3.4.2+dfsg-2","introduced":"0"}],"component":"libyang","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["3.4.2+dfsg-2"],"id":"tcs_01M5NFHXMKM5CVSSZ6Y13FTJ0G","modified_at":"2026-10-23T18:03:57.532990016Z","published_at":"2021-05-20T19:15:07.710Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-28905","https://security-tracker.debian.org/tracker/CVE-2021-28905"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-28905","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-28905"}],"summary":"In function lys_node_free() in libyang <= v1.0.225, it asserts that the value of node->module can't be NULL. But in some cases, node->module can be null, which triggers a reachable assertion (CWE-617)"}