### Security Bulletin: NVIDIA Cumulus Linux - September 2023

Updated 2023-09-06

NVIDIA has released a software update for NVIDIA Cumulus Linux. This update addresses security issues that may lead to information disclosure and denial of service. To protect your system, download and install the latest version of NVIDIA Cumulus Linux from the <a href="https://enterprise-support.nvidia.com/s/">NVIDIA Enterprise Support Portal</a>.

Go to [NVIDIA Product Security](https://www.nvidia.com/security/)

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### Details

This section provides a summary of potential vulnerabilities that this security update addresses and their impact. Descriptions use [CWE™](https://cwe.mitre.org/), and base scores and vectors use [CVSS v3.1](https://www.first.org/cvss/specification-document) standards.

| **CVE ID** | **Description** | **Vector** | **Base Score** | **Severity** | **CWE** | **Impacts** |
| ---------- | ---------------- | ---------- | -------------- | ------------ | -------- | ------------ |
| CVE-2023-25525 | NVIDIA Cumulus Linux contains a vulnerability in forwarding where a VxLAN-encapsulated IPv6 packet received on an SVI interface with DMAC/DIPv6 set to the link-local address of the SVI interface may be incorrectly forwarded. A successful exploit may lead to information disclosure. | [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) | 7.5 | HIGH | [CWE-284](https://cwe.mitre.org/data/definitions/284.html) | Information Disclosure |
| CVE-2023-25526 | NVIDIA Cumulus Linux contains a vulnerability in neighmgrd and nlmanager where an attacker on an adjacent network may cause an uncaught exception by injecting a crafted packet. A successful exploit may lead to denial of service. | [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) | 6.5 | MEDIUM | [CWE-248](https://cwe.mitre.org/data/definitions/248.html) | Denial of Service |

The NVIDIA risk assessment is based on an average of risk across a diverse set of installed systems and may not represent the true risk to your local installation. NVIDIA recommends evaluating the risk to your specific configuration.

### Security Updates

The following table lists the software products and versions affected, and the updated version available from nvidia.com that includes this security update.

| **CVE IDs Addressed** | **Affected Products** | **Platform or OS** | **Affected Versions** | **Updated Version** |
| --------------------- | --------------------- | ----------------- | --------------------- | ------------------- |
| CVE-2023-25525 | Cumulus Linux | Cumulus Linux | All versions prior to 5.6.0 | 5.6.0 |
| CVE-2023-25526 | Cumulus Linux | Cumulus Linux | All versions prior to 5.5.0 | 5.5.0 |

### Notes

Earlier software releases of this product are also affected. If you are using an earlier release, upgrade to the latest release version.


### Acknowledgements

CVE-2023-25525: Marc Dovero

CVE-2023-25526: Marc Dovero



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### Revision History

| **Revision** | **Date** | **Description** |
| ------------ | -------- | --------------- |
| 1.0.0 | 2023-09-06 | Initial Release |

### Support
If you have any questions about this security bulletin, contact [NVIDIA Support](https://www.nvidia.com/object/support.html).

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