Issued at: 2026-07-22
Updated at: 2026-07-23
Synopsis
Important: dovecot security update
Description
Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages.
Security Fix(es):
* dovecot: Dovecot: Denial of Service via excessive IMAP bracing (CVE-2026-42006)
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.
Affected products
Rocky Linux 10 aarch64
Rocky Linux 10 ppc64le
Rocky Linux 10 riscv64
Rocky Linux 10 s390x
Rocky Linux 10 x86_64
Fixes
2476476
CVEs
CVE-2026-42006
Affected packages
Rocky Linux 10 s390x - AppStream
dovecot-debugsource-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-debuginfo-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-pgsql-debuginfo-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-mysql-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-pigeonhole-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-pigeonhole-debuginfo-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-1:2.3.21-19.el10_2.1.src.rpm
dovecot-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-pgsql-1:2.3.21-19.el10_2.1.s390x.rpm
dovecot-mysql-debuginfo-1:2.3.21-19.el10_2.1.s390x.rpm
Rocky Linux 10 x86_64 - AppStream
dovecot-debugsource-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-debuginfo-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-pgsql-debuginfo-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-1:2.3.21-19.el10_2.1.src.rpm
dovecot-pigeonhole-debuginfo-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-mysql-debuginfo-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-pgsql-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-mysql-1:2.3.21-19.el10_2.1.x86_64.rpm
dovecot-pigeonhole-1:2.3.21-19.el10_2.1.x86_64.rpm
Rocky Linux 10 ppc64le - AppStream
dovecot-pigeonhole-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-pigeonhole-debuginfo-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-mysql-debuginfo-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-pgsql-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-debugsource-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-1:2.3.21-19.el10_2.1.src.rpm
dovecot-mysql-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-pgsql-debuginfo-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-1:2.3.21-19.el10_2.1.ppc64le.rpm
dovecot-debuginfo-1:2.3.21-19.el10_2.1.ppc64le.rpm
Rocky Linux 10 aarch64 - AppStream
dovecot-pgsql-debuginfo-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-mysql-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-pigeonhole-debuginfo-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-1:2.3.21-19.el10_2.1.src.rpm
dovecot-mysql-debuginfo-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-debugsource-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-debuginfo-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-pgsql-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-pigeonhole-1:2.3.21-19.el10_2.1.aarch64.rpm
dovecot-1:2.3.21-19.el10_2.1.aarch64.rpm
Rocky Linux 10 aarch64 - CRB
dovecot-devel-1:2.3.21-19.el10_2.1.aarch64.rpm
Rocky Linux 10 riscv64 - AppStream
dovecot-1:2.3.21-19.el10_2.1.src.rpm
Rocky Linux 10 ppc64le - CRB
dovecot-devel-1:2.3.21-19.el10_2.1.ppc64le.rpm
Rocky Linux 10 x86_64 - CRB
dovecot-devel-1:2.3.21-19.el10_2.1.x86_64.rpm
Rocky Linux 10 s390x - CRB
dovecot-devel-1:2.3.21-19.el10_2.1.s390x.rpm