Bug 2535059 (CVE-2026-81642)
| Summary: | CVE-2026-81642 unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | unspecified | CC: | akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Unbound's DNSSEC validator. A remote attacker can exploit this vulnerability by controlling a malicious zone and sending a specially crafted DNSKEY record. This can lead to a heap buffer overflow, potentially resulting in a denial of service or remote code execution.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2536324 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-09-16 09:07:56 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:70754 https://access.redhat.com/errata/RHSA-2026:70754 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:70754 https://access.redhat.com/errata/RHSA-2026:70754 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:71459 https://access.redhat.com/errata/RHSA-2026:71459 This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:71419 https://access.redhat.com/errata/RHSA-2026:71419 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.6 Extended Update Support Via RHSA-2026:71460 https://access.redhat.com/errata/RHSA-2026:71460 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Via RHSA-2026:71610 https://access.redhat.com/errata/RHSA-2026:71610 This issue has been addressed in the following products: Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Via RHSA-2026:71611 https://access.redhat.com/errata/RHSA-2026:71611 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:71487 https://access.redhat.com/errata/RHSA-2026:71487 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Via RHSA-2026:72110 https://access.redhat.com/errata/RHSA-2026:72110 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2026:72183 https://access.redhat.com/errata/RHSA-2026:72183 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Extended Lifecycle Support Via RHSA-2026:72199 https://access.redhat.com/errata/RHSA-2026:72199 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2026:72264 https://access.redhat.com/errata/RHSA-2026:72264 |