{"id":"UBUNTU-CVE-2026-49282","details":"Capstone is a disassembly framework. Prior to version 6.0.0-Alpha9, Capstone's public `cs_insn_name()` API forwards caller-supplied instruction IDs directly to the selected architecture backend. Most backends validate the ID before indexing instruction-name tables, but the M68K and RISCV backends have missing or incomplete bounds checks. On a Capstone handle opened for M68K or RISCV, a caller-controlled invalid instruction ID can trigger an out-of-bounds read and crash the process. The demonstrated impact is availability loss in applications or bindings that expose instruction-name lookup to untrusted IDs. No code execution or data disclosure was demonstrated. Version 6.0.0-Alpha9 patches the issue.","modified":"2026-08-19T11:05:28Z","published":"2026-08-14T18:17:00Z","upstream":["CVE-2026-49282"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-49282"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-49282"},{"type":"REPORT","url":"https://github.com/capstone-engine/capstone/security/advisories/GHSA-jrw4-wj52-2vw8"},{"type":"REPORT","url":"https://github.com/capstone-engine/capstone/blob/251c5bb4bc9bb92973e738ae3c5f4ef86f103356/ChangeLog#L102"}],"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/2026/UBUNTU-CVE-2026-49282.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_version":"3.0.4-5","binary_name":"libcapstone3"},{"binary_version":"3.0.4-5","binary_name":"python-capstone"},{"binary_version":"3.0.4-5","binary_name":"python3-capstone"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49282.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_version":"4.0.1+really+3.0.5-1build1","binary_name":"capstone-tool"},{"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-2026-49282.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_name":"capstone-tool","binary_version":"4.0.2-5"},{"binary_version":"4.0.2-5","binary_name":"libcapstone4"},{"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-2026-49282.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_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-2026-49282.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_version":"5.0.7-2","binary_name":"libcapstone5"},{"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-2026-49282.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}