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Vulnerability DatabaseCVE-2023-28328

CVE-2023-28328: 
Linux Kernel vulnerability analysis and mitigation

Overview

A NULL pointer dereference vulnerability was discovered in the az6027 driver located in drivers/media/usb/dev-usb/az6027.c in the Linux Kernel. The vulnerability exists because messages from user space are not properly validated before being transferred to the device (NVD, Red Hat Bugzilla).

Technical details

The vulnerability is classified as a NULL pointer dereference issue (CWE-476) in the az6027 DVB USB driver. It has been assigned a CVSS v3.1 Base Score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H, indicating local access is required and the primary impact is on availability (NVD).

Impact

This vulnerability allows a local user with permissions to access an I²C adapter device created by this driver to cause a denial of service by crashing the system (Debian LTS).

Mitigation and workarounds

The vulnerability has been fixed in multiple Linux distributions including Red Hat Enterprise Linux 8 through RHSA-2023:6901 and RHSA-2023:7077, and Debian 10 (buster) in version 5.10.178-3~deb10u1 for linux-5.10 packages. Users are recommended to update their systems to the patched versions (Red Hat Errata, Debian LTS).

Additional resources

Source: This report was generated using AI

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