AlmaLinux alert ALSA-2026:22963 (samba)

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[Announce] [Security Advisory] ALSA-2026:22963: samba security update (Critical)
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Thu, 04 Jun 2026 12:01:39 +0000
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<0100019e9282b1a8-7edc5c5f-2b37-4f59-b7ef-2d9a1738decf-000000@email.amazonses.com>
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Article
Hi,

You are receiving an AlmaLinux Security update email because you subscribed to receive errata
notifications from AlmaLinux.

AlmaLinux: 10
Type: Security
Severity: Critical
Release date: 2026-06-04

Summary:

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.


Full details, updated packages, references, and other related information:
https://errata.almalinux.org/10/ALSA-2026-22963.html

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AlmaLinux Team
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