- Issued:
- 2026-06-03
- Updated:
- 2026-06-03
RHSA-2026:22963 - Critical: samba security update
Synopsis
Critical: samba security update
Type/Severity
Security Advisory Critical
Topic
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.
Description
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.
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
Affected Products
| Product | Version | Arch |
|---|---|---|
| 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 x86_64 - Extended Life Cycle | 10.2 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - 4 years of updates | 10.2 | x86_64 |
| 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 Power, little endian - Extended Life Cycle | 10.2 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - 4 years of support | 10.2 | ppc64le |
| 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 IBM z Systems - Extended Life Cycle | 10.2 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - 4 years of updates | 10.2 | s390x |
| Red Hat Enterprise Linux for ARM 64 | 10 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - Extended Update Support | 10.2 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle | 10.2 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - 4 years of updates | 10.2 | aarch64 |
| Red Hat CodeReady Linux Builder for x86_64 | 10 | x86_64 |
| Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support | 10.2 | x86_64 |
| Red Hat CodeReady Linux Builder for Power, little endian | 10 | ppc64le |
| Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support | 10.2 | ppc64le |
| Red Hat CodeReady Linux Builder for IBM z Systems | 10 | s390x |
| Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support | 10.2 | s390x |
| Red Hat CodeReady Linux Builder for ARM 64 | 10 | aarch64 |
| Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support | 10.2 | aarch64 |
Updated Packages
- samba-vfs-iouring-4.23.5-109.el10_2.s390x.rpm
- samba-client-libs-4.23.5-109.el10_2.aarch64.rpm
- samba-libs-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-common-tools-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-client-libs-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-dcerpc-4.23.5-109.el10_2.ppc64le.rpm
- samba-libs-4.23.5-109.el10_2.s390x.rpm
- python3-samba-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- ctdb-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- libsmbclient-devel-4.23.5-109.el10_2.s390x.rpm
- ldb-tools-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- python3-samba-4.23.5-109.el10_2.s390x.rpm
- samba-client-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-common-libs-4.23.5-109.el10_2.x86_64.rpm
- python3-samba-test-4.23.5-109.el10_2.s390x.rpm
- samba-dcerpc-4.23.5-109.el10_2.s390x.rpm
- samba-winbind-modules-4.23.5-109.el10_2.aarch64.rpm
- python3-ldb-4.23.5-109.el10_2.x86_64.rpm
- libwbclient-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-client-libs-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-4.23.5-109.el10_2.ppc64le.rpm
- samba-common-libs-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-common-tools-debuginfo-4.23.5-109.el10_2.s390x.rpm
- libnetapi-devel-4.23.5-109.el10_2.aarch64.rpm
- python3-ldb-4.23.5-109.el10_2.ppc64le.rpm
- libsmbclient-4.23.5-109.el10_2.aarch64.rpm
- samba-vfs-iouring-debuginfo-4.23.5-109.el10_2.s390x.rpm
- libnetapi-devel-4.23.5-109.el10_2.ppc64le.rpm
- samba-client-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- ldb-tools-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-vfs-iouring-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-krb5-locator-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-krb5-locator-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-common-libs-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- libnetapi-devel-4.23.5-109.el10_2.s390x.rpm
- samba-ldb-ldap-modules-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-modules-4.23.5-109.el10_2.ppc64le.rpm
- samba-4.23.5-109.el10_2.aarch64.rpm
- samba-tools-4.23.5-109.el10_2.s390x.rpm
- samba-dc-libs-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- libnetapi-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- ctdb-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-4.23.5-109.el10_2.x86_64.rpm
- samba-winexe-4.23.5-109.el10_2.x86_64.rpm
- libnetapi-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-libs-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-clients-debuginfo-4.23.5-109.el10_2.s390x.rpm
- python3-ldb-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-common-libs-4.23.5-109.el10_2.s390x.rpm
- libsmbclient-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-clients-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- libldb-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-krb5-printing-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-krb5-printing-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-vfs-iouring-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-krb5-locator-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-winbind-modules-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- libldb-devel-4.23.5-109.el10_2.s390x.rpm
- libwbclient-4.23.5-109.el10_2.ppc64le.rpm
- python3-ldb-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-client-libs-4.23.5-109.el10_2.x86_64.rpm
- samba-dc-libs-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-client-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-test-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-ldb-ldap-modules-4.23.5-109.el10_2.aarch64.rpm
- samba-client-4.23.5-109.el10_2.s390x.rpm
- python3-samba-test-4.23.5-109.el10_2.x86_64.rpm
- samba-ldb-ldap-modules-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-dc-libs-4.23.5-109.el10_2.x86_64.rpm
- libnetapi-devel-4.23.5-109.el10_2.x86_64.rpm
- samba-test-4.23.5-109.el10_2.ppc64le.rpm
- samba-common-tools-4.23.5-109.el10_2.ppc64le.rpm
- ldb-tools-4.23.5-109.el10_2.x86_64.rpm
- samba-dc-libs-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-4.23.5-109.el10_2.aarch64.rpm
- samba-common-libs-4.23.5-109.el10_2.aarch64.rpm
- samba-krb5-printing-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-libs-4.23.5-109.el10_2.aarch64.rpm
- samba-dc-libs-4.23.5-109.el10_2.aarch64.rpm
- samba-devel-4.23.5-109.el10_2.s390x.rpm
- samba-test-libs-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-krb5-printing-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- libnetapi-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-devel-4.23.5-109.el10_2.x86_64.rpm
- samba-tools-4.23.5-109.el10_2.aarch64.rpm
- python3-samba-dc-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-krb5-printing-4.23.5-109.el10_2.s390x.rpm
- libsmbclient-devel-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-clients-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-common-tools-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-4.23.5-109.el10_2.src.rpm
- samba-client-libs-4.23.5-109.el10_2.s390x.rpm
- libsmbclient-devel-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-4.23.5-109.el10_2.s390x.rpm
- libwbclient-4.23.5-109.el10_2.s390x.rpm
- samba-gpupdate-4.23.5-109.el10_2.noarch.rpm
- libwbclient-devel-4.23.5-109.el10_2.x86_64.rpm
- samba-dcerpc-4.23.5-109.el10_2.x86_64.rpm
- libnetapi-4.23.5-109.el10_2.x86_64.rpm
- samba-dcerpc-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-vfs-iouring-4.23.5-109.el10_2.aarch64.rpm
- libnetapi-4.23.5-109.el10_2.ppc64le.rpm
- python3-samba-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- python3-samba-4.23.5-109.el10_2.aarch64.rpm
- samba-libs-4.23.5-109.el10_2.x86_64.rpm
- python3-ldb-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- python3-samba-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-4.23.5-109.el10_2.s390x.rpm
- samba-vfs-iouring-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-modules-4.23.5-109.el10_2.s390x.rpm
- samba-client-4.23.5-109.el10_2.aarch64.rpm
- libldb-4.23.5-109.el10_2.s390x.rpm
- samba-winbind-clients-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-dc-libs-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-dcerpc-4.23.5-109.el10_2.aarch64.rpm
- python3-samba-4.23.5-109.el10_2.x86_64.rpm
- ctdb-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-test-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- libwbclient-devel-4.23.5-109.el10_2.s390x.rpm
- samba-winbind-clients-4.23.5-109.el10_2.x86_64.rpm
- libldb-devel-4.23.5-109.el10_2.aarch64.rpm
- libwbclient-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-ldb-ldap-modules-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-modules-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-dcerpc-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- libwbclient-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-libs-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-libs-4.23.5-109.el10_2.ppc64le.rpm
- samba-tools-4.23.5-109.el10_2.x86_64.rpm
- python3-samba-dc-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-krb5-locator-4.23.5-109.el10_2.s390x.rpm
- libwbclient-4.23.5-109.el10_2.x86_64.rpm
- samba-winbind-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-modules-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-common-tools-4.23.5-109.el10_2.s390x.rpm
- libldb-devel-4.23.5-109.el10_2.ppc64le.rpm
- samba-pidl-4.23.5-109.el10_2.noarch.rpm
- libsmbclient-devel-4.23.5-109.el10_2.ppc64le.rpm
- ldb-tools-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- libwbclient-devel-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-modules-4.23.5-109.el10_2.x86_64.rpm
- samba-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- libsmbclient-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-debugsource-4.23.5-109.el10_2.x86_64.rpm
- samba-tools-4.23.5-109.el10_2.ppc64le.rpm
- libwbclient-devel-4.23.5-109.el10_2.aarch64.rpm
- samba-devel-4.23.5-109.el10_2.ppc64le.rpm
- samba-test-libs-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-4.23.5-109.el10_2.ppc64le.rpm
- libldb-devel-4.23.5-109.el10_2.x86_64.rpm
- python3-samba-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-krb5-locator-4.23.5-109.el10_2.x86_64.rpm
- libsmbclient-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-winbind-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- libnetapi-4.23.5-109.el10_2.aarch64.rpm
- samba-client-libs-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-test-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-devel-4.23.5-109.el10_2.aarch64.rpm
- samba-vfs-iouring-4.23.5-109.el10_2.x86_64.rpm
- samba-common-libs-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-test-4.23.5-109.el10_2.s390x.rpm
- ldb-tools-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-test-4.23.5-109.el10_2.x86_64.rpm
- samba-common-tools-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-4.23.5-109.el10_2.x86_64.rpm
- libldb-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-dc-libs-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- libnetapi-4.23.5-109.el10_2.s390x.rpm
- python3-samba-dc-4.23.5-109.el10_2.x86_64.rpm
- samba-common-tools-4.23.5-109.el10_2.aarch64.rpm
- python3-samba-dc-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-common-libs-4.23.5-109.el10_2.ppc64le.rpm
- samba-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-libs-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-debuginfo-4.23.5-109.el10_2.s390x.rpm
- ldb-tools-4.23.5-109.el10_2.aarch64.rpm
- libldb-4.23.5-109.el10_2.aarch64.rpm
- samba-test-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-dcerpc-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-krb5-printing-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-krb5-locator-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- libsmbclient-4.23.5-109.el10_2.s390x.rpm
- samba-test-4.23.5-109.el10_2.aarch64.rpm
- python3-samba-dc-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-krb5-printing-4.23.5-109.el10_2.x86_64.rpm
- samba-test-libs-debuginfo-4.23.5-109.el10_2.s390x.rpm
- python3-ldb-4.23.5-109.el10_2.s390x.rpm
- python3-samba-dc-4.23.5-109.el10_2.aarch64.rpm
- samba-dcerpc-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-client-4.23.5-109.el10_2.ppc64le.rpm
- samba-client-4.23.5-109.el10_2.x86_64.rpm
- samba-test-libs-4.23.5-109.el10_2.x86_64.rpm
- samba-common-libs-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-ldb-ldap-modules-4.23.5-109.el10_2.s390x.rpm
- libldb-4.23.5-109.el10_2.x86_64.rpm
- python3-ldb-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-debugsource-4.23.5-109.el10_2.aarch64.rpm
- python3-samba-test-4.23.5-109.el10_2.ppc64le.rpm
- samba-winbind-krb5-locator-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- libnetapi-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-debugsource-4.23.5-109.el10_2.ppc64le.rpm
- python3-samba-dc-4.23.5-109.el10_2.ppc64le.rpm
- samba-test-libs-4.23.5-109.el10_2.aarch64.rpm
- samba-test-libs-4.23.5-109.el10_2.s390x.rpm
- python3-samba-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-ldb-ldap-modules-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- ldb-tools-4.23.5-109.el10_2.s390x.rpm
- libldb-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- python3-samba-test-4.23.5-109.el10_2.aarch64.rpm
- samba-test-libs-4.23.5-109.el10_2.ppc64le.rpm
- samba-vfs-iouring-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- libwbclient-4.23.5-109.el10_2.aarch64.rpm
- libsmbclient-4.23.5-109.el10_2.x86_64.rpm
- ldb-tools-4.23.5-109.el10_2.ppc64le.rpm
- python3-ldb-4.23.5-109.el10_2.aarch64.rpm
- libldb-4.23.5-109.el10_2.ppc64le.rpm
- samba-ldb-ldap-modules-4.23.5-109.el10_2.x86_64.rpm
- libwbclient-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
- samba-common-4.23.5-109.el10_2.noarch.rpm
- samba-winbind-clients-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-krb5-locator-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-clients-4.23.5-109.el10_2.ppc64le.rpm
- libsmbclient-4.23.5-109.el10_2.ppc64le.rpm
- samba-krb5-printing-4.23.5-109.el10_2.ppc64le.rpm
- samba-usershares-4.23.5-109.el10_2.noarch.rpm
- samba-common-tools-4.23.5-109.el10_2.x86_64.rpm
- samba-winexe-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-debugsource-4.23.5-109.el10_2.s390x.rpm
- python3-samba-dc-4.23.5-109.el10_2.s390x.rpm
- samba-client-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-clients-4.23.5-109.el10_2.s390x.rpm
- libsmbclient-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-dc-libs-4.23.5-109.el10_2.s390x.rpm
- ctdb-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-client-libs-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- libldb-debuginfo-4.23.5-109.el10_2.s390x.rpm
- samba-client-libs-4.23.5-109.el10_2.ppc64le.rpm
- samba-test-libs-debuginfo-4.23.5-109.el10_2.aarch64.rpm
- samba-winbind-modules-debuginfo-4.23.5-109.el10_2.x86_64.rpm
- samba-ldb-ldap-modules-debuginfo-4.23.5-109.el10_2.ppc64le.rpm
Fixes
- This content is not included.BZ - 2447317
- This content is not included.BZ - 2447318
- This content is not included.BZ - 2447319
- This content is not included.BZ - 2452232
- This content is not included.BZ - 2459061
- This content is not included.BZ - 2479762
CVEs
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at Security Contacts and Procedures.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.