{"id":"UBUNTU-CVE-2024-36844","details":"libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx-\u003ebackend pointer. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.","modified":"2026-04-27T18:48:32.562421Z","published":"2024-05-31T20:15:00Z","upstream":["CVE-2024-36844"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-36844"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2024-36844"},{"type":"REPORT","url":"https://github.com/stephane/libmodbus/issues/749"}],"affected":[{"package":{"name":"libmodbus","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libmodbus@3.0.5-1ubuntu0.1~esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.4-1","3.0.5-1","3.0.5-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.0.5-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.json"}},{"package":{"name":"libmodbus","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libmodbus@3.0.6-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.6-1","3.0.6-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.0.6-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.json"}},{"package":{"name":"libmodbus","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libmodbus@3.0.6-2+deb9u1build0.18.04.1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.6-2","3.0.6-2ubuntu0.1~esm1","3.0.6-2+deb9u1build0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.0.6-2+deb9u1build0.18.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.json"}},{"package":{"name":"libmodbus","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libmodbus@3.1.6-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.6-1","3.1.6-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.1.6-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.json"}},{"package":{"name":"libmodbus","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libmodbus@3.1.6-2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.6-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.1.6-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.json"}},{"package":{"name":"libmodbus","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libmodbus@3.1.10-1ubuntu1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.6-2.1","3.1.10-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.1.10-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.json"}},{"package":{"name":"libmodbus","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/libmodbus@3.1.11-2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.11-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.1.11-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.json"}},{"package":{"name":"libmodbus","ecosystem":"Ubuntu:26.04","purl":"pkg:deb/ubuntu/libmodbus@3.1.11-2build1?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.11-2","3.1.11-2build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libmodbus5","binary_version":"3.1.11-2build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-36844.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:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}