{"id":"UBUNTU-CVE-2026-47143","details":"Capstone is a disassembly framework. Versions prior to 6.0.0-Alpha8 and 5.0.8 have a NULL pointer dereference in `modRMRequired()` and `decode()` when disassembling 3DNow! opcodes (`0F 0F`) in builds compiled with `-DCAPSTONE_X86_REDUCE`, allowing a remote attacker to crash any application using the reduced X86 Capstone library by supplying a crafted input containing the 4-byte sequence `0F 0F \u003cmodrm\u003e \u003cimm8\u003e`. Versions 6.0.0-Alpha8 and 5.0.8 patch the issue.","modified":"2026-08-04T11:00:09.565434564Z","published":"2026-07-21T21:16:00Z","upstream":["CVE-2026-47143"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-47143"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-47143"}],"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_version":"3.0.4-0.2","binary_name":"python-capstone"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47143.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_version":"3.0.4-5","binary_name":"python-capstone"},{"binary_name":"python3-capstone","binary_version":"3.0.4-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47143.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/2026/UBUNTU-CVE-2026-47143.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_name":"python3-capstone","binary_version":"4.0.2-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47143.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_version":"4.0.2-5.1build1","binary_name":"libcapstone4"},{"binary_name":"python3-capstone","binary_version":"4.0.2-5.1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47143.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_name":"capstone-tool","binary_version":"5.0.7-2"},{"binary_name":"libcapstone5","binary_version":"5.0.7-2"},{"binary_version":"5.0.7-2","binary_name":"python3-capstone"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47143.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}