{"id":"UBUNTU-CVE-2022-28739","details":"There is a buffer over-read in Ruby before 2.6.10, 2.7.x before 2.7.6, 3.x before 3.0.4, and 3.1.x before 3.1.2. It occurs in String-to-Float conversion, including Kernel#Float and String#to_f.","modified":"2026-04-22T13:21:27.200762Z","published":"2022-05-09T18:15:00Z","related":["USN-5462-1","USN-5462-2"],"upstream":["CVE-2022-28739"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-28739"},{"type":"REPORT","url":"https://github.com/ruby/ruby/commit/69f9992ed41920389d4185141a14f02f89a4d306"},{"type":"REPORT","url":"https://github.com/ruby/ruby/commit/c9c2245c0a25176072e02db9254f0e0c84c805cd"},{"type":"REPORT","url":"https://github.com/ruby/ruby/commit/3fa771ddedac25560be57f4055f1767e6c810f58"},{"type":"REPORT","url":"https://github.com/ruby/ruby/commit/8d142ecff9af7d60728b8cfa9138e8623985c428"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/news/2022/04/12/buffer-overrun-in-string-to-float-cve-2022-28739/"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2022-28739"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5462-2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5462-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-28739"}],"affected":[{"package":{"name":"ruby2.3","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ruby2.3@2.3.1-2~ubuntu16.04.16+esm3?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-2~ubuntu16.04.16+esm3"}]}],"versions":["2.3.0-1","2.3.0-2","2.3.0-4ubuntu2","2.3.0-4ubuntu3","2.3.0-5ubuntu1","2.3.1-2~16.04","2.3.1-2~16.04.2","2.3.1-2~16.04.4","2.3.1-2~16.04.5","2.3.1-2~16.04.6","2.3.1-2~16.04.7","2.3.1-2~16.04.9","2.3.1-2~16.04.10","2.3.1-2~16.04.11","2.3.1-2~16.04.12","2.3.1-2~ubuntu16.04.13","2.3.1-2~ubuntu16.04.14","2.3.1-2~ubuntu16.04.15","2.3.1-2~ubuntu16.04.16","2.3.1-2~ubuntu16.04.16+esm1","2.3.1-2~ubuntu16.04.16+esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libruby2.3","binary_version":"2.3.1-2~ubuntu16.04.16+esm3"},{"binary_version":"2.3.1-2~ubuntu16.04.16+esm3","binary_name":"ruby2.3"},{"binary_name":"ruby2.3-tcltk","binary_version":"2.3.1-2~ubuntu16.04.16+esm3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-28739.json"}},{"package":{"name":"ruby2.5","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ruby2.5@2.5.1-1ubuntu1.12?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.1-1ubuntu1.12"}]}],"versions":["2.5.0~preview1-1ubuntu2","2.5.0-4ubuntu1","2.5.0-4ubuntu4","2.5.0-5ubuntu1","2.5.0-6ubuntu1","2.5.1-1ubuntu1","2.5.1-1ubuntu1.1","2.5.1-1ubuntu1.2","2.5.1-1ubuntu1.4","2.5.1-1ubuntu1.5","2.5.1-1ubuntu1.6","2.5.1-1ubuntu1.7","2.5.1-1ubuntu1.8","2.5.1-1ubuntu1.9","2.5.1-1ubuntu1.10","2.5.1-1ubuntu1.11"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libruby2.5","binary_version":"2.5.1-1ubuntu1.12"},{"binary_version":"2.5.1-1ubuntu1.12","binary_name":"ruby2.5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-28739.json"}},{"package":{"name":"ruby2.7","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ruby2.7@2.7.0-5ubuntu1.7?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.0-5ubuntu1.7"}]}],"versions":["2.7.0-1","2.7.0-2","2.7.0-3","2.7.0-4","2.7.0-4ubuntu1","2.7.0-5ubuntu1","2.7.0-5ubuntu1.1","2.7.0-5ubuntu1.2","2.7.0-5ubuntu1.3","2.7.0-5ubuntu1.4","2.7.0-5ubuntu1.5","2.7.0-5ubuntu1.6"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libruby2.7","binary_version":"2.7.0-5ubuntu1.7"},{"binary_name":"ruby2.7","binary_version":"2.7.0-5ubuntu1.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-28739.json"}},{"package":{"name":"ruby3.0","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/ruby3.0@3.0.2-7ubuntu2.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.2-7ubuntu2.1"}]}],"versions":["3.0.2-5ubuntu1","3.0.2-7","3.0.2-7ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libruby3.0","binary_version":"3.0.2-7ubuntu2.1"},{"binary_name":"ruby3.0","binary_version":"3.0.2-7ubuntu2.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-28739.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":"low"}]}