Red Hat Product Errata RHSA-2026:50108 - Security Advisory Issued: 2026-08-04 Updated: 2026-08-04 RHSA-2026:50108 - Security Advisory Overview Updated Packages Synopsis Important: ldns security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for ldns is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description The ldns packages contain a library with the aim to simplify DNS programming in C. All low-level DNS/DNSSEC operations are supported. We also define a higher level API which allows a programmer to (for instance) create or sign packets. Security Fix(es): ldns: ldns: Off-path poisoning attacks due to insufficient query-response matching (CVE-2026-10846) 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 9 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 x86_64 Red Hat Enterprise Linux for IBM z Systems 9 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 s390x Red Hat Enterprise Linux for Power, little endian 9 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat Enterprise Linux for ARM 64 9 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.8 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.8 x86_64 Red Hat CodeReady Linux Builder for x86_64 9 x86_64 Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le Red Hat CodeReady Linux Builder for ARM 64 9 aarch64 Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.8 x86_64 Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.8 ppc64le Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.8 s390x Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.8 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.8 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.8 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.8 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.8 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.8 s390x Fixes BZ - 2487437 - CVE-2026-10846 ldns: ldns: Off-path poisoning attacks due to insufficient query-response matching CVEs CVE-2026-10846 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 9 SRPM ldns-1.7.1-12.el9_8.1.src.rpm SHA-256: 6d4f7b352f681b57fa5d1f5b2663cd6048296d6c80053b059a86e0b55ecead7a x86_64 ldns-1.7.1-12.el9_8.1.i686.rpm SHA-256: b4457c46d38ae11146a0331d09822db09fddf181ec3075761d2b56eed930a9df ldns-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 319e0a9943370c2570e2ad85c493d9fa0779e7cd6385ad635fd3c4e0cd49e194 ldns-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 0e68b3472ebd861b4ccbbe984e55a2f85d1bf1e1e222ce82923c025b69c8f285 ldns-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: def176f1c727aef11fb3f672cc2578cb122963ab8a6ea692b4d9c9f24211665c ldns-debugsource-1.7.1-12.el9_8.1.i686.rpm SHA-256: 953f7d239a32b97fd6b798f0f2b496e080e219d7938e05ed5e18ec6478174f7a ldns-debugsource-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: da4b9f2e34eeaeb71ebeaafb9f97d0e38ef6441edcd3e3e3ecdf0547565cf5eb ldns-utils-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 912742f949e9694bfe4fe13e661dc894dba882eb837d8142d331b94dba78afe0 ldns-utils-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 5b7fc1fd032ff282c43ddfd5854bb64ff8240b706c43fa2c3193c876d93c7d0d perl-ldns-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 1a514b60a577ea34d714bf293001380d9ef77bc9dbf609f381153ab007eeb118 perl-ldns-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 17e0e978933cf262362cff6a9b312b96d41a964eae6f05808c2f91915c68beee python3-ldns-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 79bccd1f635419d56269f2259dabafc152be3cc49ae46dbf8b68457a6360c544 python3-ldns-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 6597fa948ac94e7492aef779b19f21560e74ad91ba20cc9a5c4181d94d75b983 Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.8 SRPM ldns-1.7.1-12.el9_8.1.src.rpm SHA-256: 6d4f7b352f681b57fa5d1f5b2663cd6048296d6c80053b059a86e0b55ecead7a x86_64 ldns-1.7.1-12.el9_8.1.i686.rpm SHA-256: b4457c46d38ae11146a0331d09822db09fddf181ec3075761d2b56eed930a9df ldns-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 319e0a9943370c2570e2ad85c493d9fa0779e7cd6385ad635fd3c4e0cd49e194 ldns-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 0e68b3472ebd861b4ccbbe984e55a2f85d1bf1e1e222ce82923c025b69c8f285 ldns-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: def176f1c727aef11fb3f672cc2578cb122963ab8a6ea692b4d9c9f24211665c ldns-debugsource-1.7.1-12.el9_8.1.i686.rpm SHA-256: 953f7d239a32b97fd6b798f0f2b496e080e219d7938e05ed5e18ec6478174f7a ldns-debugsource-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: da4b9f2e34eeaeb71ebeaafb9f97d0e38ef6441edcd3e3e3ecdf0547565cf5eb ldns-utils-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 912742f949e9694bfe4fe13e661dc894dba882eb837d8142d331b94dba78afe0 ldns-utils-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 5b7fc1fd032ff282c43ddfd5854bb64ff8240b706c43fa2c3193c876d93c7d0d perl-ldns-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 1a514b60a577ea34d714bf293001380d9ef77bc9dbf609f381153ab007eeb118 perl-ldns-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 17e0e978933cf262362cff6a9b312b96d41a964eae6f05808c2f91915c68beee python3-ldns-debuginfo-1.7.1-12.el9_8.1.i686.rpm SHA-256: 79bccd1f635419d56269f2259dabafc152be3cc49ae46dbf8b68457a6360c544 python3-ldns-debuginfo-1.7.1-12.el9_8.1.x86_64.rpm SHA-256: 6597fa948ac94e7492aef779b19f21560e74ad91ba20cc9a5c4181d94d75b983 Red Hat Enterprise Linux for IBM z Systems 9 SRPM ldns-1.7.1-12.el9_8.1.src.rpm SHA-256: 6d4f7b352f681b57fa5d1f5b2663cd6048296d6c80053b059a86e0b55ecead7a s390x ldns-1.7.1-12.el9_8.1.s390x.rpm SHA-256: b08a4695ae1da0a3c9538d5396a87fbbaf42bea789a4af620b992153a9ddb28e ldns-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 45a9d411e46be348440383370c5bc70b2359fa16d5d35f2d311774d25c8fc862 ldns-debugsource-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 6c0a0082a1d4b43e5dbeb593230d81cd3d3647effc6fcecd7c2935a88facba0c ldns-utils-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 49a74330962d01c2af4764094c0ebae68e7f46b5b70cc2be1b0b538bc9c1b026 perl-ldns-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: fa7878f6223d17b3590a7f0df9f7f58a3e47d7a6171101be744acfadb56f5e32 python3-ldns-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 6f397da755afcaf2ac882647d2eeab7ba88718e58b7bf2beb6362539bd057305 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.8 SRPM ldns-1.7.1-12.el9_8.1.src.rpm SHA-256: 6d4f7b352f681b57fa5d1f5b2663cd6048296d6c80053b059a86e0b55ecead7a s390x ldns-1.7.1-12.el9_8.1.s390x.rpm SHA-256: b08a4695ae1da0a3c9538d5396a87fbbaf42bea789a4af620b992153a9ddb28e ldns-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 45a9d411e46be348440383370c5bc70b2359fa16d5d35f2d311774d25c8fc862 ldns-debugsource-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 6c0a0082a1d4b43e5dbeb593230d81cd3d3647effc6fcecd7c2935a88facba0c ldns-utils-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 49a74330962d01c2af4764094c0ebae68e7f46b5b70cc2be1b0b538bc9c1b026 perl-ldns-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: fa7878f6223d17b3590a7f0df9f7f58a3e47d7a6171101be744acfadb56f5e32 python3-ldns-debuginfo-1.7.1-12.el9_8.1.s390x.rpm SHA-256: 6f397da755afcaf2ac882647d2eeab7ba88718e58b7bf2beb6362539bd057305 Red Hat Enterprise Linux for Power, little endian 9 SRPM ldns-1.7.1-12.el9_8.1.src.rpm SHA-256: 6d4f7b352f681b57fa5d1f5b2663cd6048296d6c80053b059a86e0b55ecead7a ppc64le ldns-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: 31c84d6cc44c7ec1b01acdc347c1ec89c9e0cf7b803b84fceaf38a934fe58396 ldns-debuginfo-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: acd6c48291eea0e1567fa870a7106073402d854f6342f1ea974598ca0be99871 ldns-debugsource-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: 4dbeab107b121852c6cf030c7d5c1237bfdc8771d4b8e457b6d956822a2b52be ldns-utils-debuginfo-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: bd0d993fb8a326227a2e618dc8105d4890993afa6694f1c1729675af35115135 perl-ldns-debuginfo-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: 8cd44eb099df7a4e38768a9a473d619c771877fcf1d7b826c1f4c813ae2ca392 python3-ldns-debuginfo-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: 8e3054f1f79dff4e870bc0c13bac9ffa4d40edf6df48e9dcf2483266d4f1b326 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.8 SRPM ldns-1.7.1-12.el9_8.1.src.rpm SHA-256: 6d4f7b352f681b57fa5d1f5b2663cd6048296d6c80053b059a86e0b55ecead7a ppc64le ldns-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: 31c84d6cc44c7ec1b01acdc347c1ec89c9e0cf7b803b84fceaf38a934fe58396 ldns-debuginfo-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: acd6c48291eea0e1567fa870a7106073402d854f6342f1ea974598ca0be99871 ldns-debugsource-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: 4dbeab107b121852c6cf030c7d5c1237bfdc8771d4b8e457b6d956822a2b52be ldns-utils-debuginfo-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: bd0d993fb8a326227a2e618dc8105d4890993afa6694f1c1729675af35115135 perl-ldns-debuginfo-1.7.1-12.el9_8.1.ppc64le.rpm SHA-256: 8cd4