{"id":"UBUNTU-CVE-2022-28738","details":"A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to unexpected memory locations.","modified":"2026-04-22T15:29:34.452411Z","published":"2022-05-09T18:15:00Z","related":["USN-5462-1"],"upstream":["CVE-2022-28738"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-28738"},{"type":"REPORT","url":"https://github.com/ruby/ruby/commit/052ec6d2585c3ace95671013d336f5543624ef3d"},{"type":"REPORT","url":"https://github.com/ruby/ruby/commit/73f45e5e96ccc13a131f7c0122cf8600ce5b930f"},{"type":"REPORT","url":"https://www.ruby-lang.org/en/news/2022/04/12/double-free-in-regexp-compilation-cve-2022-28738/"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2022-28738"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5462-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-28738"}],"affected":[{"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":{"availability":"No subscription required","binaries":[{"binary_name":"libruby3.0","binary_version":"3.0.2-7ubuntu2.1"},{"binary_name":"ruby3.0","binary_version":"3.0.2-7ubuntu2.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-28738.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:H/A:H"},{"type":"Ubuntu","score":"medium"}]}