https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 17:16:07 +0000 https://vulnerability.circl.lu/vuln/alsa-2026:70754 <p><strong>Affected:</strong> AlmaLinux:8: python3-unbound, AlmaLinux:8: unbound, AlmaLinux:8: unbound-devel, AlmaLinux:8: unbound-libs</p> <p>The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.</p> <p>Security Fix(es):</p> <p>* unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis (CVE-2026-82717) * unbound: Unbound: Heap buffer overflow via malicious DNSSEC response (CVE-2026-81634) * unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY (CVE-2026-81642)</p> <p>For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.</p> <p><strong>Affected:</strong> AlmaLinux:8: python3-unbound, AlmaLinux:8: unbound, AlmaLinux:8: unbound-devel, AlmaLinux:8: unbound-libs</p> <p>The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.</p> <p>Security Fix(es):</p> <p>* unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis (CVE-2026-82717) * unbound: Unbound: Heap buffer overflow via malicious DNSSEC response (CVE-2026-81634) * unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY (CVE-2026-81642)</p> <p>For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.</p> https://vulnerability.circl.lu/vuln/alsa-2026:70754 https://vulnerability.circl.lu/vuln/fkie_cve-2026-82717 <p>In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.</p> <p>In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.</p> https://vulnerability.circl.lu/vuln/fkie_cve-2026-82717 https://vulnerability.circl.lu/vuln/ghsa-r5xg-xh8m-9q2w <p>In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.</p> <p>In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.</p> https://vulnerability.circl.lu/vuln/ghsa-r5xg-xh8m-9q2w https://vulnerability.circl.lu/vuln/msrc_cve-2026-82717 msrc_CVE-2026-82717 https://vulnerability.circl.lu/vuln/msrc_cve-2026-82717 https://vulnerability.circl.lu/vuln/rhsa-2026:68590 <p>unbound: Unbound: Denial of Service via &#39;serve-expired&#39; code path bypass unbound: Unbound: ZONEMD verification bypass due to asynchronous DNSSEC resolution unbound: Unbound: Denial of Service via use-after-free in DoQ stream output buffer unbound: Unbound: Denial of Service via continuous queries on TCP/DoT connection unbound: Unbound: Heap buffer overflow via malicious DNSSEC response unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis unbound: Unbound: Denial of Service via use-after-free in DoH stream cleanup unbound: Unbound: Denial of Service via algorithmic complexity attacks on DNSSEC</p> <p>unbound: Unbound: Denial of Service via &#39;serve-expired&#39; code path bypass unbound: Unbound: ZONEMD verification bypass due to asynchronous DNSSEC resolution unbound: Unbound: Denial of Service via use-after-free in DoQ stream output buffer unbound: Unbound: Denial of Service via continuous queries on TCP/DoT connection unbound: Unbound: Heap buffer overflow via malicious DNSSEC response unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis unbound: Unbound: Denial of Service via use-after-free in DoH stream cleanup unbound: Unbound: Denial of Service via algorithmic complexity attacks on DNSSEC</p> https://vulnerability.circl.lu/vuln/rhsa-2026:68590 https://vulnerability.circl.lu/vuln/rhsa-2026:70754 <p>unbound: Unbound: Heap buffer overflow via malicious DNSSEC response unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis</p> <p>unbound: Unbound: Heap buffer overflow via malicious DNSSEC response unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis</p> https://vulnerability.circl.lu/vuln/rhsa-2026:70754 https://vulnerability.circl.lu/vuln/rlsa-2026:70754 <p><strong>Affected:</strong> Rocky Linux:8: unbound</p> <p>The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.</p> <p>Security Fix(es):</p> <p>* unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis (CVE-2026-82717)</p> <p>* unbound: Unbound: Heap buffer overflow via malicious DNSSEC response (CVE-2026-81634)</p> <p>* unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY (CVE-2026-81642)</p> <p>For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.</p> <p><strong>Affected:</strong> Rocky Linux:8: unbound</p> <p>The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver.</p> <p>Security Fix(es):</p> <p>* unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis (CVE-2026-82717)</p> <p>* unbound: Unbound: Heap buffer overflow via malicious DNSSEC response (CVE-2026-81634)</p> <p>* unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY (CVE-2026-81642)</p> <p>For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.</p> https://vulnerability.circl.lu/vuln/rlsa-2026:70754 https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-82717 <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: unbound, Ubuntu:Pro:16.04:LTS: unbound, Ubuntu:Pro:18.04:LTS: unbound, Ubuntu:Pro:20.04:LTS: unbound, Ubuntu:22.04:LTS: unbound, Ubuntu:24.04:LTS: unbound, Ubuntu:26.04:LTS: unbound</p> <p>In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.</p> <p><strong>Affected:</strong> Ubuntu:Pro:14.04:LTS: unbound, Ubuntu:Pro:16.04:LTS: unbound, Ubuntu:Pro:18.04:LTS: unbound, Ubuntu:Pro:20.04:LTS: unbound, Ubuntu:22.04:LTS: unbound, Ubuntu:24.04:LTS: unbound, Ubuntu:26.04:LTS: unbound</p> <p>In NLnet Labs Unbound up to and including 1.26.0, a vulnerability was found in that can progressively corrupt heap memory and under certain systems and compilation options could lead to remote code execution. The vulnerability starts when CNAME synthesis during an upstream response needs to enforce(rewrite) a max TTL value in the packet buffer. Coupled with a compression pointer that points to the overwritten value and invalidates the domain name, it leads to an error path that does not properly move the buffer position and allows for the heap buffer overflow. Since this is heavily reliant on heap memory layout, results are memory corruption that eventually leads to a crash and under specific systems and compilation options remote code execution.</p> https://vulnerability.circl.lu/vuln/ubuntu-cve-2026-82717