Red Hat Product Errata RHSA-2026:49520 - Security Advisory Issued: 2026-08-03 Updated: 2026-08-03 RHSA-2026:49520 - 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 8. 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 8 x86_64 Red Hat Enterprise Linux for IBM z Systems 8 s390x Red Hat Enterprise Linux for Power, little endian 8 ppc64le Red Hat Enterprise Linux for ARM 64 8 aarch64 Red Hat CodeReady Linux Builder for x86_64 8 x86_64 Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le Red Hat CodeReady Linux Builder for ARM 64 8 aarch64 Red Hat CodeReady Linux Builder for IBM z Systems 8 s390x Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 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 8 SRPM ldns-1.7.0-23.el8_10.src.rpm SHA-256: 26282d539d58fe962b61abab881d1abb09a8c6360067d76aac786437e52ee509 x86_64 ldns-1.7.0-23.el8_10.i686.rpm SHA-256: 0e927191671ac0ec945018032f220f93262b9b74386e9ad1b3aff88312728c2e ldns-1.7.0-23.el8_10.x86_64.rpm SHA-256: 0e510efb2436a3ac5988d543ef99bcb61dad46b6bf11f76a22841f490ebb0cd8 ldns-debuginfo-1.7.0-23.el8_10.i686.rpm SHA-256: ff44774cbcb48b0392e6bb70a55e0f8b23d5adee39afc220d6b0bc7b67188b2c ldns-debuginfo-1.7.0-23.el8_10.x86_64.rpm SHA-256: 713e750aa90a84790755d70870e689c3dbe86b28fb2222419be406e425743772 ldns-debugsource-1.7.0-23.el8_10.i686.rpm SHA-256: 94607f654060d461daec89cf82a984f47b618d063d8588f45ed39fe84d7e7ed5 ldns-debugsource-1.7.0-23.el8_10.x86_64.rpm SHA-256: ee08b21dedbf0ded9787406d821976ffeb82e5060ea171da7065d1caf621329c ldns-utils-debuginfo-1.7.0-23.el8_10.i686.rpm SHA-256: be2de792abfab404927024d55f4036be79952ddaf83640284cad52b276218cea ldns-utils-debuginfo-1.7.0-23.el8_10.x86_64.rpm SHA-256: b047423a5d5e81bfcc9bcd1583a281b2b78ab06bf9364c715b5bbd74a55cf94f perl-ldns-debuginfo-1.7.0-23.el8_10.i686.rpm SHA-256: 08116b4f382fd293eb41f3efadeba97141204199618439a447133387455f372c perl-ldns-debuginfo-1.7.0-23.el8_10.x86_64.rpm SHA-256: 6926d60c78a783977c4e7a884b3dd2dedc97502f79052cdf931952c5ef28ed67 python3-ldns-debuginfo-1.7.0-23.el8_10.i686.rpm SHA-256: 1b96d03f9f52d86ad881bd301460e738751fded838eff15b35af8b71c8b4da09 python3-ldns-debuginfo-1.7.0-23.el8_10.x86_64.rpm SHA-256: 3000618dc4cdfe8621025378cb8de4ce2be44e656b7aa656b675c4a2e6a73722 Red Hat Enterprise Linux for IBM z Systems 8 SRPM ldns-1.7.0-23.el8_10.src.rpm SHA-256: 26282d539d58fe962b61abab881d1abb09a8c6360067d76aac786437e52ee509 s390x ldns-1.7.0-23.el8_10.s390x.rpm SHA-256: fc14ad6f9662dfb596718d374b183ba160a82e341c58443e737cd9aa1fe83840 ldns-debuginfo-1.7.0-23.el8_10.s390x.rpm SHA-256: 6966b53b02a91fcb17127ac7c4c6b33cc8c3e0711c4351a496adca47ebf4b0a3 ldns-debugsource-1.7.0-23.el8_10.s390x.rpm SHA-256: b1ea83421132ce95450b76e911b9bba4227a544097fe2f352eb33e96b5353258 ldns-utils-debuginfo-1.7.0-23.el8_10.s390x.rpm SHA-256: 7422214c1c3ec4e662520f14bc3d32bad6f83da982d5ff94f921425a67dc496d perl-ldns-debuginfo-1.7.0-23.el8_10.s390x.rpm SHA-256: 2a4f4c444c0c433e36bc9863be5b7cb86df174ab886c6ec8471321c3aaada27f python3-ldns-debuginfo-1.7.0-23.el8_10.s390x.rpm SHA-256: 2f7c619ad693f68ee944ce6deb50a0edbccd50abd7926134aa34fc0237d4fb28 Red Hat Enterprise Linux for Power, little endian 8 SRPM ldns-1.7.0-23.el8_10.src.rpm SHA-256: 26282d539d58fe962b61abab881d1abb09a8c6360067d76aac786437e52ee509 ppc64le ldns-1.7.0-23.el8_10.ppc64le.rpm SHA-256: d34d499bcfcec0e427caa11da276e2b17ee85fd3bf777266d92f5953498a12f5 ldns-debuginfo-1.7.0-23.el8_10.ppc64le.rpm SHA-256: 6f4355d3e6a9da86b6aa0b10fd65a86d16cfde098514892115da9ccb9a089b61 ldns-debugsource-1.7.0-23.el8_10.ppc64le.rpm SHA-256: 003f20602d98f8ff4b5152b3b31b2c830d4d95f309cbc7f3fa0fa868f00e27b6 ldns-utils-debuginfo-1.7.0-23.el8_10.ppc64le.rpm SHA-256: c7067d19e79f05a661fa97235f15de2f478fc64315d7fd32681f7a1ddfee177f perl-ldns-debuginfo-1.7.0-23.el8_10.ppc64le.rpm SHA-256: a31c1fb41703a388fdea126c322db3882e89ea01380098bf2a5ce3f50b06b487 python3-ldns-debuginfo-1.7.0-23.el8_10.ppc64le.rpm SHA-256: d6e7f03f15cd1124d00a8b4156bb9f09e71cc297eea5ccd9f27b63b04a92958c Red Hat Enterprise Linux for ARM 64 8 SRPM ldns-1.7.0-23.el8_10.src.rpm SHA-256: 26282d539d58fe962b61abab881d1abb09a8c6360067d76aac786437e52ee509 aarch64 ldns-1.7.0-23.el8_10.aarch64.rpm SHA-256: f3a66d828185c4994a8d3f9bc7b45e82630f8bd09535a41d4db923b71f845673 ldns-debuginfo-1.7.0-23.el8_10.aarch64.rpm SHA-256: d0b849391413df8e0d15845a3d652309960857125621846880de1946dcdd5c6a ldns-debugsource-1.7.0-23.el8_10.aarch64.rpm SHA-256: 9c873f948df57710212e778cabeab09e7f8b5a8ac4e4fb62ccac07f2466480d2 ldns-utils-debuginfo-1.7.0-23.el8_10.aarch64.rpm SHA-256: ac4a6971bfc425d8be71363ae216b1a7f5cdbfecfd3e6e3a391ff3a1b650722c perl-ldns-debuginfo-1.7.0-23.el8_10.aarch64.rpm SHA-256: 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SHA-256: 0c8533312a271d6b5c8ed1a46c4570bc0af8370bf0f1d727c44f7cb101b4738f perl-ldns-debuginfo-1.7.0-23.el8_10.ppc64le.rpm SHA-256: a31c1fb41703a388fdea126c322db3882e89ea01380098bf2a5ce3f50b06b487 python3-ldns-1.7.0-23.el8_10.ppc64le.rpm SHA-256: ef2158b29ffa8fce6ce08316135a11488ced1c7bf95c58a54069346bbbd2d561 python3-ldns-debuginfo-1.7.0-23.el8_10.ppc64le.rpm SHA-256: d6e7f03f15cd1124d00a8b4156bb9f09e71cc297eea5ccd9f27b63b04a92958c Red Hat CodeReady Linux Builder for ARM 64 8 SRPM aarch64 ldns-debuginfo-1.7.0-23.el8_10.aarch64.rpm SHA-256: d0b849391413df8e0d15845a3d652309960857125621846880de1946dcdd5c6a ldns-debugsource-