{"id":"CVE-2021-41690","details":"DCMTK through 3.6.6 does not handle memory free properly. The malloced memory for storing all file information are recorded in a global variable LST and are not freed properly. Sending specific requests to the dcmqrdb program can incur a memory leak. An attacker can use it to launch a DoS attack.","modified":"2026-05-15T12:04:21.210336480Z","published":"2022-06-28T13:15:10.783Z","database_specific":{},"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/06/msg00022.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00032.html"},{"type":"FIX","url":"https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb"},{"type":"PACKAGE","url":"https://github.com/DCMTK/dcmtk"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}