RHSA-2021:2313: Red Hat Security Advisory: samba security and bug fix update

An update for samba is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.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. Security Fix(es):

• samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token (CVE-2021-20254) For 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. Bug Fix(es):
• smb.service stops when samba rpms are updated (BZ#1930747)
• samba printing dumps core (BZ#1937867) Related CVEs:
• CVE-2021-20254: samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token