{"action":"Upgrade libyang to 1.0.184-r1 or later.","affected":[{"fixed":"1.0.184-r1","introduced":"0"}],"component":"libyang","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.13","exploited":false,"fixed_versions":["1.0.184-r1"],"id":"tcs_01M6GNR7FW2RETS7QNX0XTW096","modified_at":"2026-11-03T06:32:27.888205670Z","published_at":"2021-05-20T19:15:07.747Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-28906","https://security.alpinelinux.org/vuln/CVE-2021-28906"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-28906","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-28906"}],"summary":"In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags t"}