[El-errata] ELSA-2026-13498 Important: Oracle Linux 10 dovecot security update

[Errata Announcements for Oracle Linux]

Oracle Linux Security Advisory ELSA-2026-13498

http://linux.oracle.com/errata/ELSA-2026-13498.html

The following updated rpms for Oracle Linux 10 have been uploaded to the Unbreakable Linux Network:

x86_64:
dovecot-2.3.21-16.el10_1.1.x86_64.rpm
dovecot-devel-2.3.21-16.el10_1.1.x86_64.rpm
dovecot-mysql-2.3.21-16.el10_1.1.x86_64.rpm
dovecot-pgsql-2.3.21-16.el10_1.1.x86_64.rpm
dovecot-pigeonhole-2.3.21-16.el10_1.1.x86_64.rpm

aarch64:
dovecot-2.3.21-16.el10_1.1.aarch64.rpm
dovecot-devel-2.3.21-16.el10_1.1.aarch64.rpm
dovecot-mysql-2.3.21-16.el10_1.1.aarch64.rpm
dovecot-pgsql-2.3.21-16.el10_1.1.aarch64.rpm
dovecot-pigeonhole-2.3.21-16.el10_1.1.aarch64.rpm


SRPMS:
http://oss.oracle.com/ol10/SRPMS-updates/dovecot-2.3.21-16.el10_1.1.src.rpm

Related CVEs:

CVE-2025-59032
CVE-2026-27857
CVE-2026-27858




Description of changes:

[1:2.3.21-16.1]
- fix CVE-2026-27858: denial of service via crafted message before authentication (RHEL-161625)
- fix CVE-2025-59032: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command (RHEL-162273)
- fix CVE-2026-27857: denial of service via specially crafted NOOP command (RHEL-161664)