{"id":"DEBIAN-CVE-2023-5215","details":"A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly.","modified":"2026-09-15T09:02:47.420406325Z","published":"2023-09-28T14:15:26.117Z","upstream":["CVE-2023-5215"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2023-5215"}],"affected":[{"package":{"name":"libnbd","ecosystem":"Debian:12","purl":"pkg:deb/debian/libnbd?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.14.2-1","1.16.1-1","1.16.2-1","1.16.3-1","1.16.4-1","1.16.5-1","1.18.0-1","1.18.1-1","1.18.2-1","1.18.2-2","1.20.0-1","1.20.1-1","1.20.2-1","1.20.2-2","1.20.3-1","1.22.0-1","1.22.2-1","1.22.3-1","1.22.5-1","1.24.0-1","1.24.0-2","1.24.0-2.1","1.24.1-1","1.24.2-1","1.24.2-2","1.24.3-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-5215.json"}},{"package":{"name":"libnbd","ecosystem":"Debian:13","purl":"pkg:deb/debian/libnbd?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-5215.json"}},{"package":{"name":"libnbd","ecosystem":"Debian:14","purl":"pkg:deb/debian/libnbd?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.5-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2023-5215.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}