SUSE-SU-2026:4624-1: important: Security update for unbound
SLE-SECURITY-UPDATES
null at suse.de
Mon Oct 12 12:30:28 UTC 2026
# Security update for unbound
Announcement ID: SUSE-SU-2026:4624-1
Release Date: 2026-10-12T07:29:20Z
Rating: important
References:
* bsc#1280403
* bsc#1280404
* bsc#1280405
* bsc#1280406
* bsc#1280409
* bsc#1280411
* bsc#1280412
* bsc#1280413
* bsc#1280414
Cross-References:
* CVE-2026-50248
* CVE-2026-77860
* CVE-2026-77955
* CVE-2026-78227
* CVE-2026-80225
* CVE-2026-81634
* CVE-2026-81642
* CVE-2026-82717
* CVE-2026-82720
* CVE-2026-85501
CVSS scores:
* CVE-2026-50248 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-50248 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-50248 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L
* CVE-2026-77860 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-77860 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-77860 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-77955 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-77955 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-77955 ( NVD ): 4.4 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-78227 ( SUSE ): 9.2
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
* CVE-2026-78227 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-78227 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L
* CVE-2026-80225 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-80225 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-80225 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-80225 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-81634 ( SUSE ): 9.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
* CVE-2026-81634 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-81634 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-81642 ( SUSE ): 9.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
* CVE-2026-81642 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-81642 ( NVD ): 9.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Red
* CVE-2026-81642 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-82717 ( SUSE ): 9.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
* CVE-2026-82717 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-82717 ( NVD ): 8.4
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
* CVE-2026-82717 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-82720 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
* CVE-2026-82720 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-82720 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-85501 ( SUSE ): 6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
* CVE-2026-85501 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-85501 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
* CVE-2026-85501 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
* SUSE Linux Enterprise High Performance Computing 15 SP4
* SUSE Linux Enterprise High Performance Computing 15 SP5
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
* SUSE Linux Enterprise Micro 5.5
* SUSE Linux Enterprise Server 15 SP4
* SUSE Linux Enterprise Server 15 SP4 LTSS
* SUSE Linux Enterprise Server 15 SP5
* SUSE Linux Enterprise Server 15 SP5 LTSS
* SUSE Linux Enterprise Server for SAP Applications 15 SP4
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
An update that solves 10 vulnerabilities can now be installed.
## Description:
This update for unbound fixes the following issues:
* CVE-2026-77860: 'serve-expired' can bypass Unbound 'wait-limit'
(bsc#1280403).
* CVE-2026-77955: Possible ZONEMD verification bypass window (bsc#1280404).
* CVE-2026-78227: Use-after-free in DoQ stream output buffer on reset re-
transmission (bsc#1280405).
* CVE-2026-80225: Possible degradation of service from continuous queries on
the same TCP/DoT connection (bsc#1280406).
* CVE-2026-81634: Possible heap buffer overflow during DNSSEC canonicalization
(bsc#1280409).
* CVE-2026-81642: Heap buffer overflow and possible Remote Code Execution when
digesting DNSKEY (bsc#1280411).
* CVE-2026-82717: CNAME synthesis could lead to heap corruption (bsc#1280412).
* CVE-2026-82720: Use-after-free in DoH stream cleanup code path
(bsc#1280413).
* CVE-2026-85501: Retrap: Novel Vulnerabilities to launch Algorithmic
Complexity Attacks on DNSSEC (bsc#1280414).
Changes for libunbound-devel-mini:
* Updated to version 1.26.1
Changes for unbound:
* Updated to version 1.26.1
## 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 Enterprise Server for SAP Applications 15 SP4
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4624
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4624
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4624
* SUSE Linux Enterprise Server for SAP Applications 15 SP5
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4624
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4624
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4624
* SUSE Linux Enterprise Micro 5.5
zypper in -t patch SUSE-SLE-Micro-5.5-2026-4624
* SUSE Linux Enterprise Server 15 SP4 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4624
* SUSE Linux Enterprise Server 15 SP5 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4624
## Package List:
* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
* SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
* unbound-debugsource-1.26.1-150100.10.31.1
* unbound-anchor-debuginfo-1.26.1-150100.10.31.1
* unbound-anchor-1.26.1-150100.10.31.1
* unbound-debuginfo-1.26.1-150100.10.31.1
* unbound-devel-1.26.1-150100.10.31.1
* libunbound8-1.26.1-150100.10.31.1
* libunbound8-debuginfo-1.26.1-150100.10.31.1
## References:
* https://www.suse.com/security/cve/CVE-2026-50248.html
* https://www.suse.com/security/cve/CVE-2026-77860.html
* https://www.suse.com/security/cve/CVE-2026-77955.html
* https://www.suse.com/security/cve/CVE-2026-78227.html
* https://www.suse.com/security/cve/CVE-2026-80225.html
* https://www.suse.com/security/cve/CVE-2026-81634.html
* https://www.suse.com/security/cve/CVE-2026-81642.html
* https://www.suse.com/security/cve/CVE-2026-82717.html
* https://www.suse.com/security/cve/CVE-2026-82720.html
* https://www.suse.com/security/cve/CVE-2026-85501.html
* https://bugzilla.suse.com/show_bug.cgi?id=1280403
* https://bugzilla.suse.com/show_bug.cgi?id=1280404
* https://bugzilla.suse.com/show_bug.cgi?id=1280405
* https://bugzilla.suse.com/show_bug.cgi?id=1280406
* https://bugzilla.suse.com/show_bug.cgi?id=1280409
* https://bugzilla.suse.com/show_bug.cgi?id=1280411
* https://bugzilla.suse.com/show_bug.cgi?id=1280412
* https://bugzilla.suse.com/show_bug.cgi?id=1280413
* https://bugzilla.suse.com/show_bug.cgi?id=1280414
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