RLSA-2026:22963

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: Missing access check on reparse point operations (CVE-2026-1933)

• samba: vfs_worm does not block directory modification (CVE-2026-2340)

• samba: group policy certificate enrollment uses http:// without validation (CVE-2026-3012)

• samba: Samba: Remote Code Execution in printing subsystem via unescaped job description (CVE-2026-4480)

• ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake (CVE-2026-40170)

• samba: Remote Code Execution in SAMR (CVE-2026-4408)

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.