CVE-2026-15812
Fixed in a distro release EPSS <1%CVSS 4.8
A vulnerability was found in the internal Access Control List (ACL) subsystem of kronosnet (Version affected: <= 1.34). When the framework is explicitly configured to manage dynamic links (accepting network traffic from any IP address) without network payload encryption, the validation architecture implicitly trusts the link ID provided within incoming data packets. A remote, unauthenticated attacker can exploit this lack of validation by spoofing a legitimate link ID inside crafted network frames. This allows the attacker to fully bypass the ACL framework and inject arbitrary data packets into the application layer, potentially leading to data corruption or service instabilities.
Products: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 12 | kronosnet | no fix |
| Debian 13 | kronosnet | no fix |
| Debian 14 | kronosnet | 1.35-1 |
| SUSE Linux Enterprise High Availability Extension 16.0 | kronosnet | 1.30-160000.4.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | kronosnet | 1.30-160000.4.1 |
| SUSE Linux Micro 6.2 | kernel-livepatch-SLE16-RT_Update_15 | 3-160000.1.1 |
| SUSE Linux Micro Extras 6.2 | rpm | 4.20.1-160000.3.1 |
| Ubuntu 18.04 LTS | kronosnet | no fix |
| Ubuntu 20.04 LTS | kronosnet | no fix |
| Ubuntu 22.04 LTS | kronosnet | no fix |
| Ubuntu 24.04 LTS | kronosnet | no fix |
| Ubuntu 26.04 LTS | kronosnet | no fix |
| Ubuntu 26.10 | kronosnet | no fix |
| openSUSE Leap 16.0 | kronosnet | 1.30-160000.4.1 |
| openSUSE Tumbleweed | kronosnet | 1.33-2.1 |