{"id":"DEBIAN-CVE-2026-2340","details":"A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.","modified":"2026-09-18T08:47:33.351150810Z","published":"2026-05-27T14:16:44.387Z","upstream":["CVE-2026-2340"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-2340"}],"affected":[{"package":{"name":"samba","ecosystem":"Debian:12","purl":"pkg:deb/debian/samba?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.17.12+dfsg-0+deb12u4"}]}],"versions":["2:4.17.10+dfsg-0+deb12u1","2:4.17.10+dfsg-0+deb12u1~bpo11+1","2:4.17.11+dfsg-0+deb12u1","2:4.17.12+dfsg-0+deb12u1","2:4.17.12+dfsg-0+deb12u1~bpo11+1","2:4.17.12+dfsg-0+deb12u2","2:4.17.12+dfsg-0+deb12u3","2:4.17.8+dfsg-2","2:4.17.8+dfsg-2.1","2:4.17.9+dfsg-0+deb12u1","2:4.17.9+dfsg-0+deb12u2","2:4.17.9+dfsg-0+deb12u3","2:4.17.9+dfsg-0+deb12u3~bpo11+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-2340.json"}},{"package":{"name":"samba","ecosystem":"Debian:13","purl":"pkg:deb/debian/samba?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.22.8+dfsg-0+deb13u2"}]}],"versions":["2:4.22.3+dfsg-4","2:4.22.4+dfsg-1","2:4.22.4+dfsg-1~deb13u1","2:4.22.4+dfsg-1~deb13u1~bpo12+1","2:4.22.6+dfsg-0+deb13u1","2:4.22.6+dfsg-0+deb13u1~bpo12+1","2:4.22.8+dfsg-0+deb13u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-2340.json"}},{"package":{"name":"samba","ecosystem":"Debian:14","purl":"pkg:deb/debian/samba?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:4.24.3+dfsg-1"}]}],"versions":["2:4.22.3+dfsg-4","2:4.22.4+dfsg-1","2:4.22.4+dfsg-1~deb13u1","2:4.22.4+dfsg-1~deb13u1~bpo12+1","2:4.23.0+dfsg-1","2:4.23.0+dfsg-2","2:4.23.0+dfsg-3","2:4.23.0~rc1+dfsg-1","2:4.23.0~rc2+dfsg-1","2:4.23.0~rc3+dfsg-1","2:4.23.1+dfsg-1","2:4.23.2+dfsg-1","2:4.23.3+dfsg-1","2:4.23.3+dfsg-1~bpo13+1","2:4.23.4+dfsg-1","2:4.23.4+dfsg-1~bpo13+1","2:4.23.5+dfsg-1","2:4.23.5+dfsg-1~bpo13+1","2:4.23.6+dfsg-1","2:4.23.6+dfsg-2","2:4.23.6+dfsg-2~bpo13+1","2:4.24.0+dfsg-1","2:4.24.0~rc1+dfsg-1","2:4.24.0~rc1+dfsg-2","2:4.24.0~rc1+dfsg-3","2:4.24.0~rc2+dfsg-1","2:4.24.1+dfsg-1","2:4.24.2+dfsg-1","2:4.24.2+dfsg-1~bpo13+1","2:4.24.3+dfsg-1~bpo13+1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-2340.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"}]}