{"id":"UBUNTU-CVE-2026-107635","details":"Dislocker through 0.7.3 contains an integer underflow vulnerability in get_vmk() and get_fvek() that allows attackers to trigger out-of-bounds heap reads via crafted datum sizes. Attackers can supply a malicious BitLocker volume image with a datum_size smaller than the 36-byte AES-CCM header, causing hexdump() to over-read and crash dislocker.","modified":"2026-10-14T03:22:50.227313618Z","published":"2026-10-13T00:00:00Z","upstream":["CVE-2026-107635"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-107635"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-107635"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/fvek.c#L90-L105"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker/blob/v0.7.3/src/metadata/vmk.c#L146-L180"},{"type":"REPORT","url":"https://github.com/Aorimn/dislocker/commit/0706462db88efe8df88150e4c3e4332b808f4581"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/dislocker-through-0.7.3-out-of-bounds-heap-read-via-vmk-fvek-datum-size-underflow"}],"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_name":"libdislocker0.7","binary_version":"0.7.1-3build3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107635.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_version":"0.7.1-5","binary_name":"dislocker"},{"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-2026-107635.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_name":"dislocker","binary_version":"0.7.3-2ubuntu2"},{"binary_version":"0.7.3-2ubuntu2","binary_name":"libdislocker0.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107635.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_name":"libdislocker0.7t64","binary_version":"0.7.3-3.1build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-107635.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-2026-107635.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:N/I:N/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}