Red Hat Security Advisory: bind9.16 security update
This advisory addresses two security vulnerabilities in BIND 9. 16, a widely used DNS server implementation. The first vulnerability (CVE-2026-3039) involves memory exhaustion during GSS-API TKEY negotiation, potentially leading to denial of service. The second vulnerability (CVE-2026-5946) allows denial of service via specially crafted DNS messages. Red Hat has released an important security update for affected versions of Red Hat Enterprise Linux 8 and related products to fix these issues. No known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
The Berkeley Internet Name Domain (BIND) 9.16 server contains two vulnerabilities: CVE-2026-3039, which can cause memory exhaustion during GSS-API TKEY negotiation, and CVE-2026-5946, which allows denial of service through specially crafted DNS messages. These issues affect Red Hat Enterprise Linux 8 and related distributions. Red Hat has issued an important security update (RHSA-2026:23360) that addresses these vulnerabilities by updating the bind9.16 packages. The advisory includes updated packages for multiple architectures including x86_64, s390x, ppc64le, and aarch64.
Potential Impact
Successful exploitation of these vulnerabilities can lead to denial of service conditions on affected DNS servers, potentially disrupting DNS resolution services. The memory exhaustion vulnerability could cause the BIND server to consume excessive resources during GSS-API TKEY negotiation, while the other vulnerability allows denial of service via malicious DNS messages. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Red Hat has released updated bind9.16 packages that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 8 versions and related products should apply the security update as described in Red Hat advisory RHSA-2026:23360 and the referenced article https://access.redhat.com/articles/11258. Applying this update will remediate the vulnerabilities. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: bind9.16 security update
Description
This advisory addresses two security vulnerabilities in BIND 9. 16, a widely used DNS server implementation. The first vulnerability (CVE-2026-3039) involves memory exhaustion during GSS-API TKEY negotiation, potentially leading to denial of service. The second vulnerability (CVE-2026-5946) allows denial of service via specially crafted DNS messages. Red Hat has released an important security update for affected versions of Red Hat Enterprise Linux 8 and related products to fix these issues. No known exploits are reported in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Berkeley Internet Name Domain (BIND) 9.16 server contains two vulnerabilities: CVE-2026-3039, which can cause memory exhaustion during GSS-API TKEY negotiation, and CVE-2026-5946, which allows denial of service through specially crafted DNS messages. These issues affect Red Hat Enterprise Linux 8 and related distributions. Red Hat has issued an important security update (RHSA-2026:23360) that addresses these vulnerabilities by updating the bind9.16 packages. The advisory includes updated packages for multiple architectures including x86_64, s390x, ppc64le, and aarch64.
Potential Impact
Successful exploitation of these vulnerabilities can lead to denial of service conditions on affected DNS servers, potentially disrupting DNS resolution services. The memory exhaustion vulnerability could cause the BIND server to consume excessive resources during GSS-API TKEY negotiation, while the other vulnerability allows denial of service via malicious DNS messages. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Red Hat has released updated bind9.16 packages that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 8 versions and related products should apply the security update as described in Red Hat advisory RHSA-2026:23360 and the referenced article https://access.redhat.com/articles/11258. Applying this update will remediate the vulnerabilities. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:23360
- Cve Count
- 2
- Additional Cves
- ["CVE-2026-5946"]
- Cvss Version
- null
Threat ID: 6a21eb14e29bf47b50d2381f
Added to database: 6/4/2026, 9:16:04 PM
Last enriched: 6/4/2026, 9:18:41 PM
Last updated: 6/5/2026, 12:27:09 AM
Views: 4
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