{"id":"UBUNTU-CVE-2021-40812","details":"The GD Graphics Library (aka LibGD) through 2.3.2 has an out-of-bounds read because of the lack of certain gdGetBuf and gdPutBuf return value checks.","modified":"2026-04-22T13:02:17.266968Z","published":"2021-09-08T21:15:00Z","related":["USN-7112-1"],"upstream":["CVE-2021-40812"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-40812"},{"type":"REPORT","url":"https://github.com/libgd/libgd/issues/750#issuecomment-914872385"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-40812"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7112-1"}],"affected":[{"package":{"name":"libgd2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libgd2@2.1.0-3ubuntu0.11+esm2?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0-2","2.1.0-3","2.1.0-3ubuntu0.1","2.1.0-3ubuntu0.2","2.1.0-3ubuntu0.3","2.1.0-3ubuntu0.5","2.1.0-3ubuntu0.6","2.1.0-3ubuntu0.7","2.1.0-3ubuntu0.8","2.1.0-3ubuntu0.10","2.1.0-3ubuntu0.11","2.1.0-3ubuntu0.11+esm1","2.1.0-3ubuntu0.11+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.0-3ubuntu0.11+esm2","binary_name":"libgd-tools"},{"binary_name":"libgd3","binary_version":"2.1.0-3ubuntu0.11+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40812.json"}},{"package":{"name":"libgd2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libgd2@2.1.1-4ubuntu0.16.04.12+esm4?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.1-4ubuntu0.16.04.12+esm4"}]}],"versions":["2.1.1-4build1","2.1.1-4build2","2.1.1-4ubuntu0.16.04.1","2.1.1-4ubuntu0.16.04.2","2.1.1-4ubuntu0.16.04.3","2.1.1-4ubuntu0.16.04.5","2.1.1-4ubuntu0.16.04.6","2.1.1-4ubuntu0.16.04.7","2.1.1-4ubuntu0.16.04.8","2.1.1-4ubuntu0.16.04.10","2.1.1-4ubuntu0.16.04.11","2.1.1-4ubuntu0.16.04.12","2.1.1-4ubuntu0.16.04.12+esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_version":"2.1.1-4ubuntu0.16.04.12+esm4","binary_name":"libgd-tools"},{"binary_version":"2.1.1-4ubuntu0.16.04.12+esm4","binary_name":"libgd3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40812.json"}},{"package":{"name":"libgd2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libgd2@2.2.5-4ubuntu0.5+esm3?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.5-4ubuntu0.5+esm3"}]}],"versions":["2.2.5-3","2.2.5-4","2.2.5-4ubuntu0.2","2.2.5-4ubuntu0.3","2.2.5-4ubuntu0.4","2.2.5-4ubuntu0.5"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libgd-tools","binary_version":"2.2.5-4ubuntu0.5+esm3"},{"binary_name":"libgd3","binary_version":"2.2.5-4ubuntu0.5+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40812.json"}},{"package":{"name":"libgd2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libgd2@2.2.5-5.2ubuntu2.4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.5-5.2ubuntu2.4"}]}],"versions":["2.2.5-5.2","2.2.5-5.2ubuntu2","2.2.5-5.2ubuntu2.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libgd-tools","binary_version":"2.2.5-5.2ubuntu2.4"},{"binary_name":"libgd3","binary_version":"2.2.5-5.2ubuntu2.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40812.json"}},{"package":{"name":"libgd2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libgd2@2.3.0-2ubuntu2.3?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.0-2ubuntu2.3"}]}],"versions":["2.3.0-2ubuntu1","2.3.0-2ubuntu2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libgd-tools","binary_version":"2.3.0-2ubuntu2.3"},{"binary_name":"libgd3","binary_version":"2.3.0-2ubuntu2.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40812.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}