A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
Metrics
Affected Vendors & Products
References
History
Tue, 19 May 2026 08:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat hardened Images
Redhat openshift Container Platform |
|
| Vendors & Products |
Redhat hardened Images
Redhat openshift Container Platform |
Tue, 19 May 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Mon, 18 May 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 18 May 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service. | |
| Title | Gnutls: gnutls: denial of service via dtls packet reordering vulnerability | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
|
| Weaknesses | CWE-475 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-05-18T19:05:35.556Z
Reserved: 2026-04-23T11:23:46.516Z
Link: CVE-2026-42009
Updated: 2026-05-18T19:05:20.322Z
Status : Awaiting Analysis
Published: 2026-05-18T13:16:32.707
Modified: 2026-05-18T19:32:38.777
Link: CVE-2026-42009
OpenCVE Enrichment
Updated: 2026-05-19T08:18:57Z