{"id":"RLSA-2026:25049","summary":"Critical: samba security update","details":"Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.\n\nSecurity Fix(es):\n\n* samba: Missing access check on reparse point operations (CVE-2026-1933)\n\n* samba: vfs_worm does not block directory modification (CVE-2026-2340)\n\n* samba: group policy certificate enrollment uses http:// without validation (CVE-2026-3012)\n\n* samba: Samba: Remote Code Execution in printing subsystem via unescaped job description (CVE-2026-4480)\n\n* ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake (CVE-2026-40170)\n\n* samba: Remote Code Execution in SAMR (CVE-2026-4408)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","modified":"2026-06-13T00:30:04.786801385Z","published":"2026-06-13T00:03:17.085789Z","upstream":["CVE-2026-1933","CVE-2026-2340","CVE-2026-3012","CVE-2026-40170","CVE-2026-4408","CVE-2026-4480"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:25049"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447317"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447318"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2447319"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2452232"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2459061"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2479762"}],"affected":[{"package":{"name":"samba","ecosystem":"Rocky Linux:9","purl":"pkg:rpm/rocky-linux/samba?distro=rocky-linux-9&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.23.5-10.el9_8"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:25049.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}