{"id":"UBUNTU-CVE-2025-67873","details":"Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.","modified":"2026-05-20T16:23:42.630854711Z","published":"2025-12-17T22:16:00Z","upstream":["CVE-2025-67873"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-67873"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-67873"},{"type":"REPORT","url":"https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3"},{"type":"REPORT","url":"https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg"}],"affected":[{"package":{"name":"capstone","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/capstone?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.4-0.1","3.0.4-0.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libcapstone3","binary_version":"3.0.4-0.2"},{"binary_name":"python-capstone","binary_version":"3.0.4-0.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-67873.json"}},{"package":{"name":"capstone","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/capstone?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.4-3","3.0.4-5"],"ecosystem_specific":{"binaries":[{"binary_name":"libcapstone3","binary_version":"3.0.4-5"},{"binary_name":"python-capstone","binary_version":"3.0.4-5"},{"binary_version":"3.0.4-5","binary_name":"python3-capstone"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-67873.json"}},{"package":{"name":"capstone","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/capstone?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.1+really+3.0.5-1","4.0.1+really+3.0.5-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"capstone-tool","binary_version":"4.0.1+really+3.0.5-1build1"},{"binary_name":"libcapstone3","binary_version":"4.0.1+really+3.0.5-1build1"},{"binary_name":"python-capstone","binary_version":"4.0.1+really+3.0.5-1build1"},{"binary_name":"python3-capstone","binary_version":"4.0.1+really+3.0.5-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-67873.json"}},{"package":{"name":"capstone","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/capstone?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.2-3","4.0.2-3build1","4.0.2-5"],"ecosystem_specific":{"binaries":[{"binary_version":"4.0.2-5","binary_name":"capstone-tool"},{"binary_name":"libcapstone4","binary_version":"4.0.2-5"},{"binary_version":"4.0.2-5","binary_name":"python3-capstone"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-67873.json"}},{"package":{"name":"capstone","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/capstone?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.2-5","4.0.2-5ubuntu1","4.0.2-5.1","4.0.2-5.1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"capstone-tool","binary_version":"4.0.2-5.1build1"},{"binary_name":"libcapstone4","binary_version":"4.0.2-5.1build1"},{"binary_version":"4.0.2-5.1build1","binary_name":"python3-capstone"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-67873.json"}},{"package":{"name":"capstone","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/capstone?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.5-1","5.0.6-1"],"ecosystem_specific":{"binaries":[{"binary_name":"capstone-tool","binary_version":"5.0.6-1"},{"binary_version":"5.0.6-1","binary_name":"libcapstone5"},{"binary_version":"5.0.6-1","binary_name":"python3-capstone"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-67873.json"}},{"package":{"name":"capstone","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/capstone?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.6-1","5.0.6-1build1","5.0.7-2"],"ecosystem_specific":{"binaries":[{"binary_version":"5.0.7-2","binary_name":"capstone-tool"},{"binary_version":"5.0.7-2","binary_name":"libcapstone5"},{"binary_name":"python3-capstone","binary_version":"5.0.7-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-67873.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}