CVE-2026-42009
7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: secalert@redhat.com (Secondary)
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.
Affected (43)
Products: Gnu: Gnutls · Redhat: Enterprise Linux, Hardened Images, Openshift Container Platform, Enterprise Linux For Els, Enterprise Linux For Ibm Z Systems, Enterprise Linux For Ibm Z Systems Els, Enterprise Linux For Power Little Endian, Enterprise Linux For Power Little Endian Els, Enterprise Linux For Eus, Enterprise Linux For Ibm Z Systems Eus, Enterprise Linux For Power Little Endian Eus, Enterprise Linux For Update Services For Sap Solutions, Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| All versions | |
| Version 6.0 | |
| All versions | |
| Version 4.0 |
Configuration B
| Vulnerable Software | Affected Versions |
|---|---|
| Version 8.0 | |
| Version 8.10 | |
| Version 8.0_s390x | |
| Version 8.10 | |
| Version 8.0_ppc64le | |
| Version 8.10 |
Configuration C
| Vulnerable Software | Affected Versions |
|---|---|
| Version 9.0 | |
| Version 9.8 | |
| Version 9.8 | |
| Version 9.8 | |
| Version 9.8 | |
| Version 9.0_ppc64le | |
| Version 9.8 | |
| Version 9.8 | |
| Version 9.8 | |
| Version 9.8 |
Configuration D
| Vulnerable Software | Affected Versions |
|---|---|
| Version 10.0 | |
| Version 10.2 | |
| Version 10.2 | |
| Version 10.2 | |
| Version 10.2 | |
| Version 10.2 | |
| Version 10.0 | |
| Version 10.2 | |
| Version 10.2 |
References (48)
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Third Party Advisory
Source: secalert@redhat.com
Issue TrackingThird Party Advisory
Source: secalert@redhat.com
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Issue TrackingThird Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Timeline
No history available yet.