(RHSA-2026:22963) Critical: samba security update

来源： redhat_advisory · 发布时间 2026-06-04 03:10 (UTC+08:00) · 抓取时间 2026-06-04 03:50 (UTC+08:00)

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Critical: samba security update

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Overview Updated Packages Critical: samba security update Security Advisory: Critical Identify and remediate systems affected by this advisory. View affected systems An update for samba is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Critical. 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: 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. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Red Hat Enterprise Linux for x86_64 10 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64 Red Hat Enterprise Linux for IBM z Systems 10 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 s390x Red Hat Enterprise Linux for Power, little endian 10 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le Red Hat Enterprise Linux for ARM 64 10 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2 aarch64 Red Hat CodeReady Linux Builder for x86_64 10 x86_64 Red Hat CodeReady Linux Builder for Power, little endian 10 ppc64le Red Hat CodeReady Linux Builder for ARM 64 10 aarch64 Red Hat CodeReady Linux Builder for IBM z Systems 10 s390x Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 10.2 x86_64 Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 10.2 ppc64le Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 10.2 s390x Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 10.2 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2 s390x Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 10.2 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 10.2 s390x BZ - 2447317 - CVE-2026-1933 samba: Missing access check on reparse point operations BZ - 2447318 - CVE-2026-2340 samba: vfs_worm does not block directory modification BZ - 2447319 - CVE-2026-3012 samba: group policy certificate enrollment uses http:// without validation BZ - 2452232 - CVE-2026-4480 samba: Samba: Remote Code Execution in printing subsystem via unescaped job description BZ - 2459061 - CVE-2026-40170 ngtcp2: ngtcp2: Denial of service via stack buffer overflow during QUIC handshake BZ - 2479762 - CVE-2026-4408 samba: Remote Code Execution in SAMR CVE-2026-1933 CVE-2026-2340 CVE-2026-3012 CVE-2026-4408 CVE-2026-4480 CVE-2026-40170 https://access.redhat.com/security/updates/classification/#critical The Red Hat security contact is [email protected] . More contact details at https://access.redhat.com/security/team/contact/ .

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{
  "cves": [
    "CVE-2026-1933",
    "CVE-2026-2340",
    "CVE-2026-3012",
    "CVE-2026-4408",
    "CVE-2026-4480",
    "CVE-2026-40170"
  ],
  "product_names": [
    "Red Hat Enterprise Linux for IBM z Systems",
    "Red Hat Enterprise Linux for Power, little endian - 4 years of support",
    "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates",
    "Red Hat Enterprise Linux for ARM 64 - Extended Update Support",
    "Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle",
    "Red Hat Enterprise Linux for Power, little endian",
    "Red Hat Enterprise Linux for x86_64 - Extended Update Support",
    "Red Hat Enterprise Linux for Power, little endian - Extended Update Support",
    "Red Hat Enterprise Linux for x86_64",
    "Red Hat Enterprise Linux for x86_64 - Extended Life Cycle",
    "Red Hat Enterprise Linux for ARM 64",
    "Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support",
    "Red Hat Enterprise Linux for x86_64 - 4 years of updates",
    "Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle",
    "Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support",
    "Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support",
    "Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle",
    "Red Hat Enterprise Linux for ARM 64 - 4 years of updates",
    "Red Hat CodeReady Linux Builder for x86_64",
    "Red Hat Enterprise Linux for IBM z Systems - Extended Update Support",
    "Red Hat CodeReady Linux Builder for ARM 64",
    "Red Hat CodeReady Linux Builder for IBM z Systems",
    "Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support",
    "Red Hat CodeReady Linux Builder for Power, little endian"
  ],
  "update_date": [
    "2026-06-03T19:10:02Z"
  ]
}

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(RHSA-2026:22963) Critical: samba security update

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