{"id":"RLSA-2021:4058","summary":"Moderate: 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: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token (CVE-2021-20254)\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":"2026-03-11T05:59:58.149426Z","published":"2021-11-02T07:48:59Z","upstream":["CVE-2021-20254"],"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2021:4058"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1949442"}],"affected":[{"package":{"name":"samba","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/samba?distro=rocky-linux-8-4-legacy&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:4.13.3-5.el8_4"}],"database_specific":{"yum_repository":"BaseOS"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2021:4058.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}