{"id":"CLSA-2026-1787401059","summary":"Fix CVE(s): CVE-2023-6516","details":"   * SECURITY UPDATE: named running as a recursive resolver could be driven to exceed the configured max-cache-size, and exhaust available memory, because tree-pruning cleanup events were queued faster than they were processed\n     - debian/patches/CVE-2023-6516.patch: limit isc_task_send() overhead for tree pruning (upstream c3377cbfaa)\n     - debian/patches/CVE-2023-6516-lock-contention.patch: reduce lock contention during RBTDB tree pruning (upstream 801e888d03)\n     - debian/patches/CVE-2023-6516-prune-guards.patch: guard re-queueing a node for pruning (upstream f6289ad931, 4b6fc97af6, 7d9be24bb1)\n     - debian/patches/CVE-2023-6516-final-design.patch: the pruning design upstream settled on in 9.16.49, GL #4621 (upstream a548312191, eba7fb5f9f, 5f98eba608); adds dns_db_setprunetask() rather than changing the dns_db_settask() ABI\n     - debian/libdns1104.symbols: record the three entry points the last patch adds\n     - CVE-2023-6516","modified":"2026-10-26T09:31:52.920460683Z","published":"2026-08-22T12:22:33Z","upstream":["CVE-2023-6516"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/debian10els/CLSA-2026-1787401059.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6516"}],"affected":[{"package":{"name":"bind9","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/bind9?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"bind9-doc","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/bind9-doc?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"bind9-host","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/bind9-host?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"bind9utils","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/bind9utils?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"dnsutils","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/dnsutils?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libbind-dev","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libbind-dev?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libbind-export-dev","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libbind-export-dev?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libbind9-161","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libbind9-161?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libdns-export1104","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libdns-export1104?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libdns1104","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libdns1104?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libirs-export161","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libirs-export161?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libirs161","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libirs161?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.11.5.P4+dfsg-5.1+deb10u11+tuxcare.els5"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/debian10els/CLSA-2026-1787401059.json"}},{"package":{"name":"libisc-export1100","ecosystem":"TuxCare:Debian:10","purl":"pkg:deb/tuxcare/libisc-export1100?distro=debian-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"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