Astra Linux – vulnerability in unbound

Unbound versions up to and including 1.25.0 contain a vulnerability in the jostle logic that could undermine its intended purpose and reduce resolution performance. Retransmissions of the same query may re-establish the status of slow-running queries, preventing the jostle logic from treating the...

AlmaLinux 9.2 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-libs (ALMALINUX9.2:CLSA-2026:1780949133)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1780949133 advisory. - NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the jostle logic that could defeat its purpose and degrade...

Rocky Linux 8 [CIQ] Security Update: python3-unbound / python3-unbound-debuginfo / unbound / etc Multiple Vulnerabilities (crlsa-2026_37282)

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202637282 advisory. unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack...

AlmaLinux 9.6 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-dracut / etc (ALMALINUX9.6:CLSA-2026:1779789234)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1779789234 advisory. - NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the jostle logic that could defeat its purpose and degrade...

Rocky Linux 9.6 [TuxCare] Security Update: python3-unbound / unbound / unbound-devel / unbound-dracut / etc (ALMALINUX9.6:CLSA-2026:1779789234)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1779789234 advisory. - NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the jostle logic that could defeat its purpose and degrade...

Unity Linux 20.1070e Security Update: unbound (UTSA-2026-035860)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-035860 advisory. NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the jostle logic that could defeat its purpose and degrade resolution performance...

TencentOS Server 3: unbound (TSSA-2026:0887)

The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0887 advisory. Package updates are available for TencentOS Server 3 that fix the following vulnerabilities...

K000162784: NLnet Labs Unbound vulnerability CVE-2026-42534

Security Advisory Description NLnet Labs Unbound up to and including version 1.25.0 has a vulnerability in the jostle logic that could defeat its purpose and degrade resolution performance. Retransmits of the same query could renew the age of slow running queries and not allow the jostle logic to...

MiracleLinux 9 : unbound-1.24.2-3.el9_8.2 (AXSA:2026-1474:09)

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1474:09 advisory. unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack...

AlmaLinux 8 : unbound (ALSA-2026:37282)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:37282 advisory. unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack...

AlmaLinux 10 : unbound (ALSA-2026:36320)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:36320 advisory. unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack...

RLSA-2026:36320 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack CVE-2026-40622 unbound: Unbound: Denial of...

RLSA-2026:36777 Important: unbound security update

The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. Security Fixes: unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack CVE-2026-40622 unbound: Unbound: Denial of...

RockyLinux 8 : unbound (RLSA-2026:37282)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:37282 advisory. unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack...

RockyLinux 10 : unbound (RLSA-2026:36320)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:36320 advisory. unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack...

RockyLinux 9 : unbound (RLSA-2026:36777)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:36777 advisory. unbound: Unbound: Denial of Service via excessive EDNS options CVE-2026-41292 unbound: Unbound: Cache manipulation via 'ghost domain names' attack...

CVE-2026-50046

In NLnet Labs Unbound 1.15.0 up to and including 1.25.1, the TLS server name used for DNS-over-TLS DoT forwarded queries is tied to a struct's 'servicedquery' lifetime but also referenced by another struct 'waitingtcp'. When the owning struct is jostled out of the mesh while the DoT TCP stream is...

CVE-2026-50046 Possible heap use-after-free in an error path when a DoT forwarded query is jostled out

In NLnet Labs Unbound 1.15.0 up to and including 1.25.1, the TLS server name used for DNS-over-TLS DoT forwarded queries is tied to a struct's 'servicedquery' lifetime but also referenced by another struct 'waitingtcp'. When the owning struct is jostled out of the mesh while the DoT TCP stream is...

CVE-2026-50046

In NLnet Labs Unbound 1.15.0 up to and including 1.25.1, the TLS server name used for DNS-over-TLS DoT forwarded queries is tied to a struct's 'servicedquery' lifetime but also referenced by another struct 'waitingtcp'. When the owning struct is jostled out of the mesh while the DoT TCP stream is...

CVE-2026-50046

NLnet Labs Unbound 1.15.0–1.25.1 contains a heap use-after-free in the DoT path. The TLS server name for DoT forwarded queries is tied to a serviced_query object that is also referenced by waiting_tcp. If the owning struct is jostled out of the mesh while DoT TCP handshake is in progress, freeing...