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RLSA-2026:55841

Security Mirrored from RHSA-2026:55841
Issued at: 2026-08-18
Updated at: 2026-08-18

Advisory content derived from Red Hat RHSA-2026:55841, © Red Hat, Inc., used under CC BY 4.0, with modifications.

Synopsis

Important: unbound security update



Description

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

Security Fix(es):

* unbound: Unbound: Cache poisoning via insufficient RRSIG.Labels validation and premature cache writes (CVE-2026-44690)

* unbound: Unbound: Denial of Service via malformed EDNS Report-Channel option (CVE-2026-55973)

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

2503063 2503075

CVEs

CVE-2026-44690 CVE-2026-55973

Affected packages

Rocky Linux 9 aarch64 - AppStream

python3-unbound-0:1.24.2-3.el9_8.4.aarch64.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.4.aarch64.rpm unbound-0:1.24.2-3.el9_8.4.aarch64.rpm unbound-0:1.24.2-3.el9_8.4.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.4.aarch64.rpm unbound-debugsource-0:1.24.2-3.el9_8.4.aarch64.rpm unbound-dracut-0:1.24.2-3.el9_8.4.aarch64.rpm unbound-libs-0:1.24.2-3.el9_8.4.aarch64.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.4.aarch64.rpm

Rocky Linux 9 ppc64le - AppStream

python3-unbound-0:1.24.2-3.el9_8.4.ppc64le.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.4.ppc64le.rpm unbound-0:1.24.2-3.el9_8.4.ppc64le.rpm unbound-0:1.24.2-3.el9_8.4.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.4.ppc64le.rpm unbound-debugsource-0:1.24.2-3.el9_8.4.ppc64le.rpm unbound-dracut-0:1.24.2-3.el9_8.4.ppc64le.rpm unbound-libs-0:1.24.2-3.el9_8.4.ppc64le.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.4.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

python3-unbound-0:1.24.2-3.el9_8.4.s390x.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.4.s390x.rpm unbound-0:1.24.2-3.el9_8.4.s390x.rpm unbound-0:1.24.2-3.el9_8.4.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.4.s390x.rpm unbound-debugsource-0:1.24.2-3.el9_8.4.s390x.rpm unbound-dracut-0:1.24.2-3.el9_8.4.s390x.rpm unbound-libs-0:1.24.2-3.el9_8.4.s390x.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.4.s390x.rpm

Rocky Linux 9 x86_64 - AppStream

python3-unbound-0:1.24.2-3.el9_8.4.x86_64.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.4.x86_64.rpm unbound-0:1.24.2-3.el9_8.4.src.rpm unbound-0:1.24.2-3.el9_8.4.x86_64.rpm unbound-debuginfo-0:1.24.2-3.el9_8.4.i686.rpm unbound-debuginfo-0:1.24.2-3.el9_8.4.x86_64.rpm unbound-debugsource-0:1.24.2-3.el9_8.4.i686.rpm unbound-debugsource-0:1.24.2-3.el9_8.4.x86_64.rpm unbound-dracut-0:1.24.2-3.el9_8.4.x86_64.rpm unbound-libs-0:1.24.2-3.el9_8.4.i686.rpm unbound-libs-0:1.24.2-3.el9_8.4.x86_64.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.4.i686.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.4.x86_64.rpm

Rocky Linux 9 aarch64 - CRB

unbound-devel-0:1.24.2-3.el9_8.4.aarch64.rpm

Rocky Linux 9 x86_64 - CRB

unbound-devel-0:1.24.2-3.el9_8.4.i686.rpm unbound-devel-0:1.24.2-3.el9_8.4.x86_64.rpm

Rocky Linux 9 ppc64le - CRB

unbound-devel-0:1.24.2-3.el9_8.4.ppc64le.rpm

Rocky Linux 9 s390x - CRB

unbound-devel-0:1.24.2-3.el9_8.4.s390x.rpm