{"id":"UBUNTU-CVE-2021-42780","details":"A use after return issue was found in Opensc before version 0.22.0 in insert_pin function that could potentially crash programs using the library.","modified":"2026-01-30T02:41:43.231158Z","published":"2022-04-18T17:15:00Z","related":["USN-7346-1","USN-7346-3"],"upstream":["CVE-2021-42780"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-42780"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2021-42780"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-42780"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7346-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7346-3"}],"affected":[{"package":{"name":"opensc","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/opensc@0.15.0-1ubuntu1+esm2?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15.0-1ubuntu1+esm2"}]}],"versions":["0.15.0-1ubuntu1","0.15.0-1ubuntu1+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"opensc","binary_version":"0.15.0-1ubuntu1+esm2"},{"binary_name":"opensc-pkcs11","binary_version":"0.15.0-1ubuntu1+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-42780.json"}},{"package":{"name":"opensc","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/opensc@0.17.0-3ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.17.0-3ubuntu0.1~esm2"}]}],"versions":["0.17.0-1","0.17.0-2","0.17.0-2build1","0.17.0-3","0.17.0-3ubuntu0.1~esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"opensc","binary_version":"0.17.0-3ubuntu0.1~esm2"},{"binary_version":"0.17.0-3ubuntu0.1~esm2","binary_name":"opensc-pkcs11"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-42780.json"}},{"package":{"name":"opensc","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/opensc@0.20.0-3ubuntu0.1~esm4?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.20.0-3ubuntu0.1~esm4"}]}],"versions":["0.19.0-2","0.20.0-1","0.20.0-2","0.20.0-3","0.20.0-3ubuntu0.1~esm1","0.20.0-3ubuntu0.1~esm2","0.20.0-3ubuntu0.1~esm3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"opensc","binary_version":"0.20.0-3ubuntu0.1~esm4"},{"binary_name":"opensc-pkcs11","binary_version":"0.20.0-3ubuntu0.1~esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-42780.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}