{"id":"UBUNTU-CVE-2022-37451","details":"Exim before 4.96 has an invalid free in pam_converse in auths/call_pam.c because store_free is not used after store_malloc.","modified":"2025-07-16T07:44:49.374028Z","published":"2022-08-06T18:15:00Z","withdrawn":"2025-07-18T16:49:31Z","upstream":["CVE-2022-37451"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-37451"},{"type":"REPORT","url":"https://github.com/ivd38/exim_invalid_free"},{"type":"REPORT","url":"https://lists.exim.org/lurker/message/20220625.141825.d6de6074.en.html"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2022/08/06/1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-37451"}],"affected":[{"package":{"name":"exim4","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/exim4@4.95-4ubuntu2.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.95-4ubuntu2.1"}]}],"versions":["4.94.2-7ubuntu2","4.95-2ubuntu2","4.95-4ubuntu1","4.95-4ubuntu2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"exim4","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-base","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-base-dbgsym","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-config","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-daemon-heavy","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-daemon-heavy-dbgsym","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-daemon-light","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-daemon-light-dbgsym","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"exim4-dev","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"eximon4","binary_version":"4.95-4ubuntu2.1"},{"binary_name":"eximon4-dbgsym","binary_version":"4.95-4ubuntu2.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-37451.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:H"},{"type":"Ubuntu","score":"medium"}]}