{"id":"UBUNTU-CVE-2026-107634","details":"Dislocker through 0.7.3 contains a heap out-of-bounds read vulnerability in get_dataset() and get_next_datum() that never validate dataset and datum sizes against the metadata allocation. Attackers can craft a BitLocker volume image with inflated dataset or datum sizes that, when opened or mounted, crashes dislocker or discloses adjacent heap memory.","modified":"2026-10-17T12:58:01.546970551Z","published":"2026-10-08T15:17:00Z","upstream":["CVE-2026-107634"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-107634"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-107634"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/datums.c#L589-L640"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/metadata.c#L764-L790"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker/commit/9158e9e41dd669b360cbc53cc18ccae729b67b48"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/dislocker-through-0.7.3-heap-out-of-bounds-read-via-bitlocker-metadata-dataset-size"}],"affected":[{"package":{"name":"dislocker","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/dislocker?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.6.1-7","0.7.1-3","0.7.1-3build1","0.7.1-3build2","0.7.1-3build3"],"ecosystem_specific":{"binaries":[{"binary_name":"dislocker","binary_version":"0.7.1-3build3"},{"binary_version":"0.7.1-3build3","binary_name":"libdislocker0.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107634.json"}},{"package":{"name":"dislocker","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dislocker?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.1-4build1","0.7.1-5"],"ecosystem_specific":{"binaries":[{"binary_name":"dislocker","binary_version":"0.7.1-5"},{"binary_name":"libdislocker0.7","binary_version":"0.7.1-5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107634.json"}},{"package":{"name":"dislocker","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/dislocker?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.3-2","0.7.3-2ubuntu1","0.7.3-2ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.7.3-2ubuntu2","binary_name":"dislocker"},{"binary_name":"libdislocker0.7","binary_version":"0.7.3-2ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107634.json"}},{"package":{"name":"dislocker","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/dislocker?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.3-2.1ubuntu2","0.7.3-3","0.7.3-3.1","0.7.3-3.1build1","0.7.3-3.1build2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.7.3-3.1build2","binary_name":"dislocker"},{"binary_version":"0.7.3-3.1build2","binary_name":"libdislocker0.7t64"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107634.json"}},{"package":{"name":"dislocker","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/dislocker?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.3+git20250907-1"],"ecosystem_specific":{"binaries":[{"binary_name":"dislocker","binary_version":"0.7.3+git20250907-1"},{"binary_name":"libdislocker0.7t64","binary_version":"0.7.3+git20250907-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107634.json"}},{"package":{"name":"dislocker","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/dislocker?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.3+git20240607-3build1","0.7.3+git20250907-1"],"ecosystem_specific":{"binaries":[{"binary_name":"dislocker","binary_version":"0.7.3+git20250907-1"},{"binary_version":"0.7.3+git20250907-1","binary_name":"libdislocker0.7t64"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107634.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}