{"id":"UBUNTU-CVE-2020-22284","details":"A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.","modified":"2026-06-18T00:30:06.432575418Z","published":"2021-07-22T20:15:00Z","related":["USN-8423-1"],"upstream":["CVE-2020-22284"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-22284"},{"type":"REPORT","url":"https://savannah.nongnu.org/bugs/index.php?58554"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-22284"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8423-1"}],"affected":[{"package":{"name":"lwip","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/lwip?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.2+dfsg1-4ubuntu0.1~esm1"}]}],"versions":["2.1.2-3","2.1.2-5.1","2.1.2+dfsg1-1","2.1.2+dfsg1-4"],"ecosystem_specific":{"binaries":[{"binary_name":"liblwip0","binary_version":"2.1.2+dfsg1-4ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-22284.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}