{"id":"UBUNTU-CVE-2026-120740","details":"A flaw was found in hivex. By supplying a specially crafted Windows registry hive file, an attacker can trigger an out-of-bounds memory read when hivex parses registry values containing malformed large data block lists. This issue can cause the application processing the registry file to crash, resulting in a Denial of Service (DoS).","modified":"2026-11-04T03:30:38.835391893Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-120740"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-120740"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-120740"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2565405"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-120740"}],"affected":[{"package":{"name":"hivex","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/hivex?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.11-1build1","1.3.12-1","1.3.13-1","1.3.13-1build1","1.3.13-1build2","1.3.13-1build3","1.3.13-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libhivex-bin","binary_version":"1.3.13-1ubuntu0.1~esm1"},{"binary_name":"libhivex-ocaml","binary_version":"1.3.13-1ubuntu0.1~esm1"},{"binary_name":"libhivex0","binary_version":"1.3.13-1ubuntu0.1~esm1"},{"binary_version":"1.3.13-1ubuntu0.1~esm1","binary_name":"libwin-hivex-perl"},{"binary_version":"1.3.13-1ubuntu0.1~esm1","binary_name":"python-hivex"},{"binary_name":"python3-hivex","binary_version":"1.3.13-1ubuntu0.1~esm1"},{"binary_version":"1.3.13-1ubuntu0.1~esm1","binary_name":"ruby-hivex"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120740.json"}},{"package":{"name":"hivex","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/hivex?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.14-1build4","1.3.14-3build1","1.3.14-4","1.3.14-4build1","1.3.15-1","1.3.15-1ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libhivex-bin","binary_version":"1.3.15-1ubuntu0.1"},{"binary_name":"libhivex-ocaml","binary_version":"1.3.15-1ubuntu0.1"},{"binary_version":"1.3.15-1ubuntu0.1","binary_name":"libhivex0"},{"binary_version":"1.3.15-1ubuntu0.1","binary_name":"libwin-hivex-perl"},{"binary_version":"1.3.15-1ubuntu0.1","binary_name":"python-hivex"},{"binary_name":"python3-hivex","binary_version":"1.3.15-1ubuntu0.1"},{"binary_name":"ruby-hivex","binary_version":"1.3.15-1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120740.json"}},{"package":{"name":"hivex","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/hivex?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.18-1","1.3.18-1build1","1.3.18-2","1.3.18-2build1","1.3.18-2build2","1.3.18-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.3.18-2ubuntu0.1","binary_name":"libhivex-bin"},{"binary_version":"1.3.18-2ubuntu0.1","binary_name":"libhivex-ocaml"},{"binary_version":"1.3.18-2ubuntu0.1","binary_name":"libhivex0"},{"binary_name":"libwin-hivex-perl","binary_version":"1.3.18-2ubuntu0.1"},{"binary_version":"1.3.18-2ubuntu0.1","binary_name":"python3-hivex"},{"binary_name":"ruby-hivex","binary_version":"1.3.18-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120740.json"}},{"package":{"name":"hivex","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/hivex?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.19-1ubuntu3","1.3.21-1ubuntu1","1.3.21-1ubuntu4","1.3.21-1ubuntu5"],"ecosystem_specific":{"binaries":[{"binary_version":"1.3.21-1ubuntu5","binary_name":"libhivex-bin"},{"binary_name":"libhivex-ocaml","binary_version":"1.3.21-1ubuntu5"},{"binary_name":"libhivex0","binary_version":"1.3.21-1ubuntu5"},{"binary_name":"libwin-hivex-perl","binary_version":"1.3.21-1ubuntu5"},{"binary_version":"1.3.21-1ubuntu5","binary_name":"python3-hivex"},{"binary_name":"ruby-hivex","binary_version":"1.3.21-1ubuntu5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120740.json"}},{"package":{"name":"hivex","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/hivex?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.23-1build2","1.3.23-1build3","1.3.23-1build4","1.3.23-1build6","1.3.23-1build7"],"ecosystem_specific":{"binaries":[{"binary_name":"libhivex-bin","binary_version":"1.3.23-1build7"},{"binary_version":"1.3.23-1build7","binary_name":"libhivex-ocaml"},{"binary_version":"1.3.23-1build7","binary_name":"libhivex0"},{"binary_name":"libwin-hivex-perl","binary_version":"1.3.23-1build7"},{"binary_version":"1.3.23-1build7","binary_name":"python3-hivex"},{"binary_name":"ruby-hivex","binary_version":"1.3.23-1build7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120740.json"}},{"package":{"name":"hivex","ecosystem":"Ubuntu:26.10","purl":"pkg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