CVE-2023-2019 is a medium-severity vulnerability found in the Linux kernel's netdevsim device driver, specifically within the scheduling of events. This flaw, caused by improper management of a reference count, can potentially allow an attacker to create a denial of service condition on affected systems. The vulnerability impacts systems running Linux kernel and Red Hat Enterprise Linux 9.0.

How do I know if I'm affected?

To determine if you're affected by the vulnerability, you'll need to check if your system is running Linux kernel versions up to (excluding) 6.0 or Red Hat Enterprise Linux 9.0. This vulnerability is found in the netdevsim device driver and can lead to a denial of service condition due to improper management of a reference count. Keep in mind that this issue is rated as medium-severity, so it's important to stay informed and take necessary precautions.

What should I do if I'm affected?

If you're affected by the vulnerability, it's crucial to update your system with the latest patches. Linux has issued an update to fix this issue, which can be found in their official Git repository. To apply the update, follow the instructions provided in the repository or consult your system administrator for assistance.

Is CVE-2023-2019 in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2023-2019 vulnerability is not listed in CISA's Known Exploited Vulnerabilities Catalog. This medium-severity flaw, found in the Linux kernel's netdevsim device driver, can potentially allow an attacker with high-privileged access to create a denial of service condition on affected systems. The vulnerability was published on April 24, 2023. There is no specific due date or required action mentioned, but updating your system with the latest patches is recommended to address the issue.

Weakness enumeration

The Weakness Enumeration for CVE-2023-2019 includes two CWE-IDs: NVD-CWE-Other and CWE-911. The vulnerability is a reference count leak in the Linux kernel's netdevsim device driver, causing a denial of service condition.

For more details

CVE-2023-2019 is a medium-severity vulnerability that can lead to a denial of service condition on affected systems. By reviewing the detailed analysis provided by the National Vulnerability Database, users can gain a comprehensive understanding of the vulnerability's description, severity, technical details, and known affected software configurations. For more information about the vulnerability, including its description, severity, technical details, and known affected software configurations, visit the NVD page or the links below.

• Red Hat Bugzilla

• GitHub Commit

• Zero Day Initiative Advisory