RLSA-2026:24369

Synopsis

Important: unbound security update

Description

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

Security Fix(es):

* unbound: Heap overflow and crash with multiple nsid, cookie, padding EDNS options (CVE-2026-42944)

* unbound: Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages (CVE-2026-42959)

* unbound: Unbound DNSSEC Validator Use-After-Free via Deep Copy Pointer Overwrite Leading to DoS and Possible Remote Code Execution (CVE-2026-33278)

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

2479774 2479806 2479808

CVEs

CVE-2026-33278 CVE-2026-42944 CVE-2026-42959

Affected packages

Rocky Linux 9 aarch64 - AppStream

python3-unbound-0:1.24.2-3.el9_8.1.aarch64.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.1.aarch64.rpm unbound-0:1.24.2-3.el9_8.1.aarch64.rpm unbound-0:1.24.2-3.el9_8.1.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.1.aarch64.rpm unbound-debugsource-0:1.24.2-3.el9_8.1.aarch64.rpm unbound-dracut-0:1.24.2-3.el9_8.1.aarch64.rpm unbound-libs-0:1.24.2-3.el9_8.1.aarch64.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.1.aarch64.rpm

Rocky Linux 9 ppc64le - AppStream

python3-unbound-0:1.24.2-3.el9_8.1.ppc64le.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.1.ppc64le.rpm unbound-0:1.24.2-3.el9_8.1.ppc64le.rpm unbound-0:1.24.2-3.el9_8.1.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.1.ppc64le.rpm unbound-debugsource-0:1.24.2-3.el9_8.1.ppc64le.rpm unbound-dracut-0:1.24.2-3.el9_8.1.ppc64le.rpm unbound-libs-0:1.24.2-3.el9_8.1.ppc64le.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.1.ppc64le.rpm

Rocky Linux 9 s390x - AppStream

python3-unbound-0:1.24.2-3.el9_8.1.s390x.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.1.s390x.rpm unbound-0:1.24.2-3.el9_8.1.s390x.rpm unbound-0:1.24.2-3.el9_8.1.src.rpm unbound-debuginfo-0:1.24.2-3.el9_8.1.s390x.rpm unbound-debugsource-0:1.24.2-3.el9_8.1.s390x.rpm unbound-dracut-0:1.24.2-3.el9_8.1.s390x.rpm unbound-libs-0:1.24.2-3.el9_8.1.s390x.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.1.s390x.rpm

Rocky Linux 9 x86_64 - AppStream

python3-unbound-0:1.24.2-3.el9_8.1.x86_64.rpm python3-unbound-debuginfo-0:1.24.2-3.el9_8.1.x86_64.rpm unbound-0:1.24.2-3.el9_8.1.src.rpm unbound-0:1.24.2-3.el9_8.1.x86_64.rpm unbound-debuginfo-0:1.24.2-3.el9_8.1.i686.rpm unbound-debuginfo-0:1.24.2-3.el9_8.1.x86_64.rpm unbound-debugsource-0:1.24.2-3.el9_8.1.i686.rpm unbound-debugsource-0:1.24.2-3.el9_8.1.x86_64.rpm unbound-dracut-0:1.24.2-3.el9_8.1.x86_64.rpm unbound-libs-0:1.24.2-3.el9_8.1.i686.rpm unbound-libs-0:1.24.2-3.el9_8.1.x86_64.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.1.i686.rpm unbound-libs-debuginfo-0:1.24.2-3.el9_8.1.x86_64.rpm

Rocky Linux 9 aarch64 - CRB

unbound-devel-0:1.24.2-3.el9_8.1.aarch64.rpm

Rocky Linux 9 x86_64 - CRB

unbound-devel-0:1.24.2-3.el9_8.1.i686.rpm unbound-devel-0:1.24.2-3.el9_8.1.x86_64.rpm

Rocky Linux 9 ppc64le - CRB

unbound-devel-0:1.24.2-3.el9_8.1.ppc64le.rpm

Rocky Linux 9 s390x - CRB

unbound-devel-0:1.24.2-3.el9_8.1.s390x.rpm