RHSA-2026:53402: Important: ldns security update

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 10.0 Extended Update Support. 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. Affected Products - Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 x86_64 - Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 s390x - Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 ppc64le - Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 aarch64 - Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 10.0 x86_64 - Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 10.0 ppc64le - Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 10.0 s390x - Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 10.0 aarch64 - Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 aarch64 - Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 s390x - Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 ppc64le - Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 x86_64 Fixes - BZ - 2487437 - CVE-2026-10846 ldns: ldns: Off-path poisoning attacks due to insufficient query-response matching Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | x86_64 | | ldns-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 4fd632e2b584bace55ff5dbdcebb635de8285053bfa9398b14fec0dee085a119 | | ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 3196738cc809a7c76b302837e317a806757ced28789e761ae1b62ac45685feb6 | | ldns-debugsource-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: b5aa2825292d451eca39ccd386d7b445a787d79ab3f732dde5f737c626c7d281 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 578e9ee19beb130395abd16792b85720ee113a0f4f83433f6d3da4f66267ce62 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 6363d1ceeba682ad5c6ca522dbd099beedee41185301ae455720d9c3150b873c | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: f567d90e0dbc55acc75c30246e74898c901329cc24505433444c557279f64426 | Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | s390x | | ldns-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: c1038417ad36679a76e07b3434814e03a71381dab14ac801f03be6e9155d8c94 | | ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: a3e681d3cacac25d42239a85f96c3859b7a927e3380a5ad5ff8a3ac813aea7dc | | ldns-debugsource-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 4b82aa37c6651ad3db4e00c10968bb030257a899f695f5128afffc52bbe636c2 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 5660e458b48aededc26d4770b907a47c0aa27feb75de989a8b99c2ed14debe54 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 5bf1e14bc9776731c369208ab7a3cda32ed5828032f0e791c5e997946c2c3fc9 | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: fa3df06e012c6b8cb45213e775de53dd2bedbd4f19b66f297b2c4e65c3a3fcac | Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | ppc64le | | ldns-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 505de727c37db48d2664ce0799fa5a31c3477daa6343a3925040d5d6d537c286 | | ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: f6382fd8767da136932a25c056a553fc0988196e74a03545ac1e7ea627dc1b79 | | ldns-debugsource-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 3deb003d1df3b5e9fd7979471fd89c96f30eca30fe068e996b65eee4fcb551fc | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 48fbd2342ad4a69aafe5818c50cacc58fd30a1151066891dea19e71ae79a4007 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: f26054970a09ab5ad05d38467c49374c970a47d54974266d2730de213a1397ac | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 565a79eef51d10ad540c72be57785da08cb8ebd2ce532d30d1eb5a0ea9ca1384 | Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | aarch64 | | ldns-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 1efc1525888b0926905385d7fcc6203b0c747f6937c9b2fb5e3911de46c6583f | | ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: b90e3ebc5c56288a16c98b836a9b5e30a75c00b6c057d1f89d0ddd06c054b643 | | ldns-debugsource-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 398d57929b8d02c3ee8e847e2d2dbd695fbc27f905f5773f8ec40891a0379e28 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 6c584e10d4a7ee548e2adabf6859a07267334550ced07d0dda767d79db71009d | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: e0c34b52d1e42c2a8712dba0a94726ee67257d3f187c05d1a5eca42f38c7bba9 | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 3768ec53392815ce6cd07eabb8f91705cc65bc7d9b5e0cf42508b6c2702ab200 | Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 10.0 | SRPM | | x86_64 | | ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 3196738cc809a7c76b302837e317a806757ced28789e761ae1b62ac45685feb6 | | ldns-debugsource-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: b5aa2825292d451eca39ccd386d7b445a787d79ab3f732dde5f737c626c7d281 | | ldns-devel-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 16f5ca894b9695b73363fff686bf321b86ee109d91d8f33799252c957acc2d95 | | ldns-doc-1.8.3-18.el10_0.1.noarch.rpm | SHA-256: ed658fdc781987f7310e957c1156829b1c1907d815ab4ce0a3023ede8b422dbb | | ldns-utils-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 489f086f7a77cceec80e55b82283f1b5b3ffb956ba11e3d6a169399c9b06dfc9 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 578e9ee19beb130395abd16792b85720ee113a0f4f83433f6d3da4f66267ce62 | | perl-ldns-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: a0d18bfea9bca4cb8418c55e3bf98a02409260f3cb575127c1f61cb3a9a839e1 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 6363d1ceeba682ad5c6ca522dbd099beedee41185301ae455720d9c3150b873c | | python3-ldns-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 0177500e13a6c7dd010ea52a4b2f8b9aa8d98296f1c9be055c9d90469861817c | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: f567d90e0dbc55acc75c30246e74898c901329cc24505433444c557279f64426 | Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 10.0 | SRPM | | ppc64le | | ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: f6382fd8767da136932a25c056a553fc0988196e74a03545ac1e7ea627dc1b79 | | ldns-debugsource-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 3deb003d1df3b5e9fd7979471fd89c96f30eca30fe068e996b65eee4fcb551fc | | ldns-devel-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: d886bad4f414f454c1726acfacdee32449a22d3f6e08e343e086b1eb7739d0e6 | | ldns-doc-1.8.3-18.el10_0.1.noarch.rpm | SHA-256: ed658fdc781987f7310e957c1156829b1c1907d815ab4ce0a3023ede8b422dbb | | ldns-utils-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: e55daa79eebae622526fc26071868c13bac6e572cef924be6d8ab9e681ec61d7 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 48fbd2342ad4a69aafe5818c50cacc58fd30a1151066891dea19e71ae79a4007 | | perl-ldns-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 4961fe4c0b0431790ae67bb3d72c3d9f6316920bdf087e72a2a00a474528af2b | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: f26054970a09ab5ad05d38467c49374c970a47d54974266d2730de213a1397ac | | python3-ldns-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 7b18f182f98bb471f41cc37de781d81fdd4fc79c77b02de5fe73610cdb8fe187 | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 565a79eef51d10ad540c72be57785da08cb8ebd2ce532d30d1eb5a0ea9ca1384 | Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 10.0 | SRPM | | s390x | | ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: a3e681d3cacac25d42239a85f96c3859b7a927e3380a5ad5ff8a3ac813aea7dc | | ldns-debugsource-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 4b82aa37c6651ad3db4e00c10968bb030257a899f695f5128afffc52bbe636c2 | | ldns-devel-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 0d0a1152a4596da6e99614de317973e453169dc3c85f4fab4789db54fbb7d29e | | ldns-doc-1.8.3-18.el10_0.1.noarch.rpm | SHA-256: ed658fdc781987f7310e957c1156829b1c1907d815ab4ce0a3023ede8b422dbb | | ldns-utils-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: fa6af9ad126d3df3d135abea5d5d43877f7f49c939dec77c2958188f65a9ee41 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 5660e458b48aededc26d4770b907a47c0aa27feb75de989a8b99c2ed14debe54 | | perl-ldns-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 800fd1e5b99b1f40191569e293d48ab5147d5101c61002c328b5a31ccf3ca863 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 5bf1e14bc9776731c369208ab7a3cda32ed5828032f0e791c5e997946c2c3fc9 | | python3-ldns-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 9f5df73d2fb3d7445d6bfb03dc0470613c2a15b09252c3461178597aa1916ef0 | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: fa3df06e012c6b8cb45213e775de53dd2bedbd4f19b66f297b2c4e65c3a3fcac | Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 10.0 | SRPM | | aarch64 | | ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: b90e3ebc5c56288a16c98b836a9b5e30a75c00b6c057d1f89d0ddd06c054b643 | | ldns-debugsource-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 398d57929b8d02c3ee8e847e2d2dbd695fbc27f905f5773f8ec40891a0379e28 | | ldns-devel-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: c7881d593863aea580d39f59c0c7850d4ccf57e3cbd6cd5ec49165671bd5c43e | | ldns-doc-1.8.3-18.el10_0.1.noarch.rpm | SHA-256: ed658fdc781987f7310e957c1156829b1c1907d815ab4ce0a3023ede8b422dbb | | ldns-utils-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: a8ccbd18a3c27cf813df3ab3c6762a806206fbc2108df72e3b694ae318ac9a93 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 6c584e10d4a7ee548e2adabf6859a07267334550ced07d0dda767d79db71009d | | perl-ldns-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 9ab9553905b902be5a59b86b21fe53c63f1acb7cf767992ed4671de7b1e8b64d | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: e0c34b52d1e42c2a8712dba0a94726ee67257d3f187c05d1a5eca42f38c7bba9 | | python3-ldns-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 8092d5c88ef8596ee3d2516a09e762a8d0b9f8d318c4ecf4e67a17a4baef7462 | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 3768ec53392815ce6cd07eabb8f91705cc65bc7d9b5e0cf42508b6c2702ab200 | Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | aarch64 | | ldns-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 1efc1525888b0926905385d7fcc6203b0c747f6937c9b2fb5e3911de46c6583f | | ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: b90e3ebc5c56288a16c98b836a9b5e30a75c00b6c057d1f89d0ddd06c054b643 | | ldns-debugsource-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 398d57929b8d02c3ee8e847e2d2dbd695fbc27f905f5773f8ec40891a0379e28 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 6c584e10d4a7ee548e2adabf6859a07267334550ced07d0dda767d79db71009d | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: e0c34b52d1e42c2a8712dba0a94726ee67257d3f187c05d1a5eca42f38c7bba9 | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.aarch64.rpm | SHA-256: 3768ec53392815ce6cd07eabb8f91705cc65bc7d9b5e0cf42508b6c2702ab200 | Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | s390x | | ldns-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: c1038417ad36679a76e07b3434814e03a71381dab14ac801f03be6e9155d8c94 | | ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: a3e681d3cacac25d42239a85f96c3859b7a927e3380a5ad5ff8a3ac813aea7dc | | ldns-debugsource-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 4b82aa37c6651ad3db4e00c10968bb030257a899f695f5128afffc52bbe636c2 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 5660e458b48aededc26d4770b907a47c0aa27feb75de989a8b99c2ed14debe54 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: 5bf1e14bc9776731c369208ab7a3cda32ed5828032f0e791c5e997946c2c3fc9 | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.s390x.rpm | SHA-256: fa3df06e012c6b8cb45213e775de53dd2bedbd4f19b66f297b2c4e65c3a3fcac | Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | ppc64le | | ldns-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 505de727c37db48d2664ce0799fa5a31c3477daa6343a3925040d5d6d537c286 | | ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: f6382fd8767da136932a25c056a553fc0988196e74a03545ac1e7ea627dc1b79 | | ldns-debugsource-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 3deb003d1df3b5e9fd7979471fd89c96f30eca30fe068e996b65eee4fcb551fc | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 48fbd2342ad4a69aafe5818c50cacc58fd30a1151066891dea19e71ae79a4007 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: f26054970a09ab5ad05d38467c49374c970a47d54974266d2730de213a1397ac | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.ppc64le.rpm | SHA-256: 565a79eef51d10ad540c72be57785da08cb8ebd2ce532d30d1eb5a0ea9ca1384 | Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.0 | SRPM | | ldns-1.8.3-18.el10_0.1.src.rpm | SHA-256: a25a9d0609f43a1175725a433564b96121606d1054313c8ddf226c290ee5648c | | x86_64 | | ldns-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 4fd632e2b584bace55ff5dbdcebb635de8285053bfa9398b14fec0dee085a119 | | ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 3196738cc809a7c76b302837e317a806757ced28789e761ae1b62ac45685feb6 | | ldns-debugsource-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: b5aa2825292d451eca39ccd386d7b445a787d79ab3f732dde5f737c626c7d281 | | ldns-utils-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 578e9ee19beb130395abd16792b85720ee113a0f4f83433f6d3da4f66267ce62 | | perl-ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: 6363d1ceeba682ad5c6ca522dbd099beedee41185301ae455720d9c3150b873c | | python3-ldns-debuginfo-1.8.3-18.el10_0.1.x86_64.rpm | SHA-256: f567d90e0dbc55acc75c30246e74898c901329cc24505433444c557279f64426 |