RLSA-2026:36777

Synopsis

Important: unbound security update

Description

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.

Security Fix(es):

* unbound: Unbound: Denial of Service via excessive EDNS options (CVE-2026-41292)

* unbound: Unbound: Cache manipulation via 'ghost domain names' attack (CVE-2026-40622)

* unbound: Unbound: Denial of Service due to excessive resource consumption with large DNS Resource Record Sets (CVE-2026-44390)

* unbound: Unbound: Denial of Service due to degraded resolution performance in jostle logic (CVE-2026-42534)

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 9 aarch64 Rocky Linux 9 ppc64le Rocky Linux 9 s390x Rocky Linux 9 x86_64

Fixes

2480125 2480127 2480130 2480131

CVEs

CVE-2026-40622 CVE-2026-41292 CVE-2026-42534 CVE-2026-44390

Affected packages

Rocky Linux 9 aarch64 - AppStream

python3-unbound-0:1.24.2-3.el9_8.2.aarch64.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.2.aarch64.rpm unbound-0:1.24.2-3.el9_8.2.aarch64.rpm unbound-0:1.24.2-3.el9_8.2.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.2.aarch64.rpm unbound-debugsource-0:1.24.2-3.el9_8.2.aarch64.rpm unbound-dracut-0:1.24.2-3.el9_8.2.aarch64.rpm unbound-libs-0:1.24.2-3.el9_8.2.aarch64.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.2.aarch64.rpm

Rocky Linux 9 ppc64le - AppStream

python3-unbound-0:1.24.2-3.el9_8.2.ppc64le.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.2.ppc64le.rpm unbound-0:1.24.2-3.el9_8.2.ppc64le.rpm unbound-0:1.24.2-3.el9_8.2.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.2.ppc64le.rpm unbound-debugsource-0:1.24.2-3.el9_8.2.ppc64le.rpm unbound-dracut-0:1.24.2-3.el9_8.2.ppc64le.rpm unbound-libs-0:1.24.2-3.el9_8.2.ppc64le.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.2.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

python3-unbound-0:1.24.2-3.el9_8.2.s390x.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.2.s390x.rpm unbound-0:1.24.2-3.el9_8.2.s390x.rpm unbound-0:1.24.2-3.el9_8.2.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.2.s390x.rpm unbound-debugsource-0:1.24.2-3.el9_8.2.s390x.rpm unbound-dracut-0:1.24.2-3.el9_8.2.s390x.rpm unbound-libs-0:1.24.2-3.el9_8.2.s390x.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.2.s390x.rpm

Rocky Linux 9 x86_64 - AppStream

python3-unbound-0:1.24.2-3.el9_8.2.x86_64.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.2.x86_64.rpm unbound-0:1.24.2-3.el9_8.2.src.rpm unbound-0:1.24.2-3.el9_8.2.x86_64.rpm unbound-debuginfo-0:1.24.2-3.el9_8.2.i686.rpm unbound-debuginfo-0:1.24.2-3.el9_8.2.x86_64.rpm unbound-debugsource-0:1.24.2-3.el9_8.2.i686.rpm unbound-debugsource-0:1.24.2-3.el9_8.2.x86_64.rpm unbound-dracut-0:1.24.2-3.el9_8.2.x86_64.rpm unbound-libs-0:1.24.2-3.el9_8.2.i686.rpm unbound-libs-0:1.24.2-3.el9_8.2.x86_64.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.2.i686.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.2.x86_64.rpm

Rocky Linux 9 aarch64 - CRB

unbound-devel-0:1.24.2-3.el9_8.2.aarch64.rpm

Rocky Linux 9 x86_64 - CRB

unbound-devel-0:1.24.2-3.el9_8.2.i686.rpm unbound-devel-0:1.24.2-3.el9_8.2.x86_64.rpm

Rocky Linux 9 ppc64le - CRB

unbound-devel-0:1.24.2-3.el9_8.2.ppc64le.rpm

Rocky Linux 9 s390x - CRB

unbound-devel-0:1.24.2-3.el9_8.2.s390x.rpm