If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow. This issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2911 Vendor Advisory
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2911 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · isc, debian, fedoraprojectNVD modified 2026-10-24 19:10
Affected (CPE criteria) 12
cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:*cpe:2.3:a:isc:bind:*:*:*:*:supported_preview:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
References 12
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2911 Vendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/ Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230703-0010/ Third Party Advisory
- https://www.debian.org/security/2023/dsa-5439 Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/06/21/6 Mailing List, Patch, Third Party Advisory
- https://kb.isc.org/docs/cve-2023-2911 Vendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/message/SEFCEVCTYEMKTWA7V7EYPI5YQQ4JWDLI/ Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]/message/U3K6AJK7RRSR53HRF5GGKPA6PDUDWOD2/ Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230703-0010/ Third Party Advisory
- https://www.debian.org/security/2023/dsa-5439 Third Party Advisory