Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly
Summary
Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly. Red Hat rates this important (CVSS 7.5). Weakness: CWE-130. Affected package(s): rhui5/installer-rhel9:1781525693, libtasn1, gnutls, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791. Resolved in Red Hat advisory RHSA-2026:29197 — update the affected packages (`sudo dnf update`).
- rhui5/installer-rhel9:1781525693
- libtasn1-0:4.13-3.el8_6.2
- gnutls-0:3.6.16-7.el8_8.4
- gnutls-0:3.8.10-4.el10_2
- rhui5/cds-rhel9:1781525684
- libtasn1-0:4.13-4.el8_8.1
- discovery/discovery-ui-rhel9:1782166952
- discovery/discovery-server-rhel9:1782159791
- gnutls-0:3.8.3-6.el9_6.4
- gnutls-0:3.6.16-8.el8_10.6
- rhui5/rhua-rhel9:1781525739
- gnutls-main-3.8.13-1.hum1
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
- RHSA-2026:29197
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:29197 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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