Security update for unbound
| Announcement ID: | SUSE-SU-2026:21874-1 |
|---|---|
| Release Date: | 2026-05-28T15:01:59Z |
| Rating: | important |
| References: | |
| Cross-References: | |
| CVSS scores: |
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| Affected Products: |
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An update that solves 11 vulnerabilities can now be installed.
Description:
This update for unbound fixes the following issues
- CVE-2026-32792: Packet of death with DNSCrypt (bsc#1265583).
- CVE-2026-33278: Possible remote code execution during DNSSEC validation (bsc#1265587).
- CVE-2026-40622: "Ghost domain name" variant (bsc#1265581).
- CVE-2026-41292: Parsing a long list of incoming EDNS options degrades performance (bsc#1265580).
- CVE-2026-42534: Jostle logic bypass degrades resolution performance (bsc#1265585).
- CVE-2026-42923: Degradation of service with unbounded NSEC3 hash calculations (bsc#1265589).
- CVE-2026-42944: Heap overflow and crash with multiple nsid, cookie, padding EDNS options (bsc#1265578).
- CVE-2026-42959: Crash during DNSSEC validation of malicious content (bsc#1265586).
- CVE-2026-42960: Possible cache poisoning attack while following delegation (bsc#1265588).
- CVE-2026-44390: Unbounded name compression in certain cases causes degradation of service (bsc#1265584).
- CVE-2026-44608: Use after free and crash in RPZ code (bsc#1265582).
Patch Instructions:
To install this SUSE update use the SUSE recommended
installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
-
SUSE Linux Micro 6.1
zypper in -t patch SUSE-SLE-Micro-6.1-551=1
Package List:
-
SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64)
- unbound-anchor-debuginfo-1.22.0-slfo.1.1_4.1
- libunbound8-1.22.0-slfo.1.1_4.1
- unbound-anchor-1.22.0-slfo.1.1_4.1
- libunbound8-debuginfo-1.22.0-slfo.1.1_4.1
- unbound-debugsource-1.22.0-slfo.1.1_4.1
References:
- https://www.suse.com/security/cve/CVE-2026-32792.html
- https://www.suse.com/security/cve/CVE-2026-33278.html
- https://www.suse.com/security/cve/CVE-2026-40622.html
- https://www.suse.com/security/cve/CVE-2026-41292.html
- https://www.suse.com/security/cve/CVE-2026-42534.html
- https://www.suse.com/security/cve/CVE-2026-42923.html
- https://www.suse.com/security/cve/CVE-2026-42944.html
- https://www.suse.com/security/cve/CVE-2026-42959.html
- https://www.suse.com/security/cve/CVE-2026-42960.html
- https://www.suse.com/security/cve/CVE-2026-44390.html
- https://www.suse.com/security/cve/CVE-2026-44608.html
- https://bugzilla.suse.com/show_bug.cgi?id=1265578
- https://bugzilla.suse.com/show_bug.cgi?id=1265580
- https://bugzilla.suse.com/show_bug.cgi?id=1265581
- https://bugzilla.suse.com/show_bug.cgi?id=1265582
- https://bugzilla.suse.com/show_bug.cgi?id=1265583
- https://bugzilla.suse.com/show_bug.cgi?id=1265584
- https://bugzilla.suse.com/show_bug.cgi?id=1265585
- https://bugzilla.suse.com/show_bug.cgi?id=1265586
- https://bugzilla.suse.com/show_bug.cgi?id=1265587
- https://bugzilla.suse.com/show_bug.cgi?id=1265588
- https://bugzilla.suse.com/show_bug.cgi?id=1265589