{"id":"DEBIAN-CVE-2026-56770","details":"libais through 0.15 VdmStream::AddLine uses an unchecked sentinel value as a vector index when processing AIS sentences with empty or out-of-range sequential message IDs. Remote attackers can crash services or vessel systems by sending crafted AIVDM sentences over VHF marine radio or IP feeds, causing out-of-bounds memory access and potential corruption.","modified":"2026-09-14T17:03:21.134131291Z","published":"2026-06-25T19:16:44.113Z","upstream":["CVE-2026-56770"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-56770"}],"affected":[{"package":{"name":"python-libais","ecosystem":"Debian:12","purl":"pkg:deb/debian/python-libais?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-3","0.17+git.20190917.master.e464cf8-4","0.17+git.20190917.master.e464cf8-5","0.17+git.20190917.master.e464cf8-6"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56770.json"}},{"package":{"name":"python-libais","ecosystem":"Debian:13","purl":"pkg:deb/debian/python-libais?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-5","0.17+git.20190917.master.e464cf8-6"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56770.json"}},{"package":{"name":"python-libais","ecosystem":"Debian:14","purl":"pkg:deb/debian/python-libais?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-5","0.17+git.20190917.master.e464cf8-6"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-56770.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}