Red Hat Product Errata RHSA-2026:36782 - Security Advisory Issued: 2026-07-08 Updated: 2026-07-08 RHSA-2026:36782 - Security Advisory Overview Updated Packages Synopsis Moderate: aardvark-dns security update Type/Severity Security Advisory: Moderate Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for aardvark-dns is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 Authoritative DNS server for A/AAAA container records Forwards other request to configured resolvers. Read more about configuration in `src/backend/mod.rs`. Security Fix(es): aardvark-dns: Aardvark-dns: Denial of Service via truncated TCP DNS query and connection reset (CVE-2026-35406) 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 10 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 x86_64 Red Hat Enterprise Linux for IBM z Systems 10 s390x Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 s390x Red Hat Enterprise Linux for Power, little endian 10 ppc64le Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 ppc64le Red Hat Enterprise Linux for ARM 64 10 aarch64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2 aarch64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2 s390x Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 ppc64le Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 x86_64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 10.2 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 10.2 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 10.2 s390x Fixes BZ - 2456280 - CVE-2026-35406 aardvark-dns: Aardvark-dns: Denial of Service via truncated TCP DNS query and connection reset CVEs CVE-2026-35406 References https://access.redhat.com/security/updates/classification/#moderate Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 10 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f x86_64 aardvark-dns-1.17.1-1.el10_2.x86_64.rpm SHA-256: 5f0afe7c471df4fce7959491a2be1970ced3f2779f3d2a6c42b5219291e1581f aardvark-dns-debuginfo-1.17.1-1.el10_2.x86_64.rpm SHA-256: 0b967045f30ed1ac3296277654b26beb901db12af9bce33cd78f8f74d8b3e7c9 aardvark-dns-debugsource-1.17.1-1.el10_2.x86_64.rpm SHA-256: eaa46fb3924df91dd45d2eebec80125fa97b5464607bbed03fe2163b1d15d064 Red Hat Enterprise Linux for x86_64 - Extended Update Support 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f x86_64 aardvark-dns-1.17.1-1.el10_2.x86_64.rpm SHA-256: 5f0afe7c471df4fce7959491a2be1970ced3f2779f3d2a6c42b5219291e1581f aardvark-dns-debuginfo-1.17.1-1.el10_2.x86_64.rpm SHA-256: 0b967045f30ed1ac3296277654b26beb901db12af9bce33cd78f8f74d8b3e7c9 aardvark-dns-debugsource-1.17.1-1.el10_2.x86_64.rpm SHA-256: eaa46fb3924df91dd45d2eebec80125fa97b5464607bbed03fe2163b1d15d064 Red Hat Enterprise Linux for IBM z Systems 10 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f s390x aardvark-dns-1.17.1-1.el10_2.s390x.rpm SHA-256: 45ab54c42c4f33a1d6d9f5001c6fd83cacfbb7ce31c10d6be27a5a1fd1262324 aardvark-dns-debuginfo-1.17.1-1.el10_2.s390x.rpm SHA-256: 535bf866f7a5a8d56aebeaeb56df7ae27e04329fc062937060e8712409db00ff aardvark-dns-debugsource-1.17.1-1.el10_2.s390x.rpm SHA-256: 0528a9037b464cb63137cac81bb9ffdeaa488894a70f28295fe0161eb56a0989 Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f s390x aardvark-dns-1.17.1-1.el10_2.s390x.rpm SHA-256: 45ab54c42c4f33a1d6d9f5001c6fd83cacfbb7ce31c10d6be27a5a1fd1262324 aardvark-dns-debuginfo-1.17.1-1.el10_2.s390x.rpm SHA-256: 535bf866f7a5a8d56aebeaeb56df7ae27e04329fc062937060e8712409db00ff aardvark-dns-debugsource-1.17.1-1.el10_2.s390x.rpm SHA-256: 0528a9037b464cb63137cac81bb9ffdeaa488894a70f28295fe0161eb56a0989 Red Hat Enterprise Linux for Power, little endian 10 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f ppc64le aardvark-dns-1.17.1-1.el10_2.ppc64le.rpm SHA-256: c8f4ed02b9efeb07a30f5d79978cbcbd9460e221d477874e5607e0c931208f08 aardvark-dns-debuginfo-1.17.1-1.el10_2.ppc64le.rpm SHA-256: fcd622c240a52931877ef30aca1852ee8756b0c9722430c9e13788281a1c7697 aardvark-dns-debugsource-1.17.1-1.el10_2.ppc64le.rpm SHA-256: 832010bcfda9ee7f9d02406f5a930b275b2c1c3197f4bc8e5bb0594c1b9a81b5 Red Hat Enterprise Linux for Power, little endian - Extended Update Support 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f ppc64le aardvark-dns-1.17.1-1.el10_2.ppc64le.rpm SHA-256: c8f4ed02b9efeb07a30f5d79978cbcbd9460e221d477874e5607e0c931208f08 aardvark-dns-debuginfo-1.17.1-1.el10_2.ppc64le.rpm SHA-256: fcd622c240a52931877ef30aca1852ee8756b0c9722430c9e13788281a1c7697 aardvark-dns-debugsource-1.17.1-1.el10_2.ppc64le.rpm SHA-256: 832010bcfda9ee7f9d02406f5a930b275b2c1c3197f4bc8e5bb0594c1b9a81b5 Red Hat Enterprise Linux for ARM 64 10 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f aarch64 aardvark-dns-1.17.1-1.el10_2.aarch64.rpm SHA-256: e75bae285906a7225284acbe03514491a8cd1b54f9d4c3cbd7ce06449c627fdb aardvark-dns-debuginfo-1.17.1-1.el10_2.aarch64.rpm SHA-256: b8a3249a0f026f5a3d306397b426ad47347128340451eee0910b61b9e3b8a3a2 aardvark-dns-debugsource-1.17.1-1.el10_2.aarch64.rpm SHA-256: 02f08faa1431c0f24c41b6dd7b103f457d30518aff1cb38a48dce53d72e19c64 Red Hat Enterprise Linux for ARM 64 - Extended Update Support 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f aarch64 aardvark-dns-1.17.1-1.el10_2.aarch64.rpm SHA-256: e75bae285906a7225284acbe03514491a8cd1b54f9d4c3cbd7ce06449c627fdb aardvark-dns-debuginfo-1.17.1-1.el10_2.aarch64.rpm SHA-256: b8a3249a0f026f5a3d306397b426ad47347128340451eee0910b61b9e3b8a3a2 aardvark-dns-debugsource-1.17.1-1.el10_2.aarch64.rpm SHA-256: 02f08faa1431c0f24c41b6dd7b103f457d30518aff1cb38a48dce53d72e19c64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f aarch64 aardvark-dns-1.17.1-1.el10_2.aarch64.rpm SHA-256: e75bae285906a7225284acbe03514491a8cd1b54f9d4c3cbd7ce06449c627fdb aardvark-dns-debuginfo-1.17.1-1.el10_2.aarch64.rpm SHA-256: b8a3249a0f026f5a3d306397b426ad47347128340451eee0910b61b9e3b8a3a2 aardvark-dns-debugsource-1.17.1-1.el10_2.aarch64.rpm SHA-256: 02f08faa1431c0f24c41b6dd7b103f457d30518aff1cb38a48dce53d72e19c64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f s390x aardvark-dns-1.17.1-1.el10_2.s390x.rpm SHA-256: 45ab54c42c4f33a1d6d9f5001c6fd83cacfbb7ce31c10d6be27a5a1fd1262324 aardvark-dns-debuginfo-1.17.1-1.el10_2.s390x.rpm SHA-256: 535bf866f7a5a8d56aebeaeb56df7ae27e04329fc062937060e8712409db00ff aardvark-dns-debugsource-1.17.1-1.el10_2.s390x.rpm SHA-256: 0528a9037b464cb63137cac81bb9ffdeaa488894a70f28295fe0161eb56a0989 Red Hat Enterprise Linux for Power, little endian - 4 years of support 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f ppc64le aardvark-dns-1.17.1-1.el10_2.ppc64le.rpm SHA-256: c8f4ed02b9efeb07a30f5d79978cbcbd9460e221d477874e5607e0c931208f08 aardvark-dns-debuginfo-1.17.1-1.el10_2.ppc64le.rpm SHA-256: fcd622c240a52931877ef30aca1852ee8756b0c9722430c9e13788281a1c7697 aardvark-dns-debugsource-1.17.1-1.el10_2.ppc64le.rpm SHA-256: 832010bcfda9ee7f9d02406f5a930b275b2c1c3197f4bc8e5bb0594c1b9a81b5 Red Hat Enterprise Linux for x86_64 - 4 years of updates 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f x86_64 aardvark-dns-1.17.1-1.el10_2.x86_64.rpm SHA-256: 5f0afe7c471df4fce7959491a2be1970ced3f2779f3d2a6c42b5219291e1581f aardvark-dns-debuginfo-1.17.1-1.el10_2.x86_64.rpm SHA-256: 0b967045f30ed1ac3296277654b26beb901db12af9bce33cd78f8f74d8b3e7c9 aardvark-dns-debugsource-1.17.1-1.el10_2.x86_64.rpm SHA-256: eaa46fb3924df91dd45d2eebec80125fa97b5464607bbed03fe2163b1d15d064 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 10.2 SRPM aardvark-dns-1.17.1-1.el10_2.src.rpm SHA-256: e9b1a0d9ba0b026bf7e65eaf5f20bff6915497239e4339d5a34408a473316c7f x86_64 aardvark-dns-1.17.1-1.el10_2.x86_64.rpm SHA-256: 5f0afe7c471df4fce7959491a2be1970ced3f2779f3d2a6c42b5219291e1581f aardvark-dns-debuginfo-1.17.1-1.el10_2.x86_64.rpm SHA-256: 0b967045f30ed1ac3296277654b26beb901db12af9bce33cd78f8f74d8b3e7c9 aardvark-dns-debugsource-1.17.1-1.el10_2.x86_64.rpm SHA-256: eaa46fb3924df91dd45d2eebec80125fa97b5464607bbed03fe2163b1d15d064 Red Hat Enterprise Linux