Security update for dnsdist
This update for dnsdist fixes the following issues: Update to 1.9.15. Changes for dnsdist: - https://www.dnsdist.org/changelog.html#change-1.9.15 - https://www.dnsdist.org/changelog.html#change-1.9.14 Security issues fixed: - CVE-2026-40011: invalid output produced in the prometheus endpoint when a large number of crafted DNS queries are sent (bsc#1269204). - CVE-2026-40208: processing of DoH3 queries can be delayed via DoH3 GET queries with an invalid DATA frames (bsc#1269207). - CVE-2026-40209: outgoing TCP connections to backend can get stuck until a timeout occurs when specially crafted IXFR queries are sent (bsc#1269206). - CVE-2026-40210: out-of-bounds read when `SetMacAddrAction` is used can lead to uninitialized memory being sent over the network or a crash (bsc#1269205). - CVE-2026-40211: crafted DNS over HTTP/3 queries can trigger an exception that prevents memory from being freed and can lead to an OOM condition (bsc#1269203). - CVE-2026-42004: crafted EDNS OPT record will be ignored by filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted (bsc#1269202). - CVE-2026-42005: crafted web request can cause unlimited memory allocation in the internal web server and lead to a DoS (bsc#1269201).
Security update for dnsdist
Description
This update for dnsdist fixes the following issues: Update to 1.9.15. Changes for dnsdist: - https://www.dnsdist.org/changelog.html#change-1.9.15 - https://www.dnsdist.org/changelog.html#change-1.9.14 Security issues fixed: - CVE-2026-40011: invalid output produced in the prometheus endpoint when a large number of crafted DNS queries are sent (bsc#1269204). - CVE-2026-40208: processing of DoH3 queries can be delayed via DoH3 GET queries with an invalid DATA frames (bsc#1269207). - CVE-2026-40209: outgoing TCP connections to backend can get stuck until a timeout occurs when specially crafted IXFR queries are sent (bsc#1269206). - CVE-2026-40210: out-of-bounds read when `SetMacAddrAction` is used can lead to uninitialized memory being sent over the network or a crash (bsc#1269205). - CVE-2026-40211: crafted DNS over HTTP/3 queries can trigger an exception that prevents memory from being freed and can lead to an OOM condition (bsc#1269203). - CVE-2026-42004: crafted EDNS OPT record will be ignored by filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted (bsc#1269202). - CVE-2026-42005: crafted web request can cause unlimited memory allocation in the internal web server and lead to a DoS (bsc#1269201).
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- SUSE Product Security Team
- Advisory Id
- openSUSE-SU-2026:21533-1
- Cve Count
- 7
- Additional Cves
- ["CVE-2026-40208","CVE-2026-40209","CVE-2026-40210","CVE-2026-40211","CVE-2026-42004","CVE-2026-42005"]
Threat ID: 6aab496255bf5e2cf5990b12
Added to database: 09/17/2026, 01:58:58 UTC
Last updated: 09/17/2026, 01:58:58 UTC
Views: 1
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.