Vulnerability in Linux Kernel Affects ALSA USB Audio Devices
CVE-2024-53197

7.8HIGH

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 27 December 2024

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What is CVE-2024-53197?

CVE-2024-53197 is a vulnerability within the Linux kernel that specifically affects ALSA USB audio devices. This issue arises from improper handling of device configurations, wherein a malicious or rogue device can supply a value that exceeds expected limits during the initialization process. Such a flaw can compromise system stability and security, potentially allowing an attacker to exploit the system's resources and gain unauthorized access to sensitive data or system functionalities.

Technical Details

The vulnerability is reported to be associated with out-of-bounds access in the USB audio subsystem of the Linux kernel. Specifically, it stems from the way the bNumConfigurations value is managed in the context of device configurations, particularly for devices like Extigy and Mbox. When an invalid device presents a configuration value that exceeds what the kernel allocates for processing, it results in vulnerabilities during further operations, such as when destroying configurations, potentially leading to memory corruption.

Potential impact of CVE-2024-53197

Unauthorized Access and Control: Exploiting this vulnerability may allow an attacker to gain elevated privileges on the system, compromising the integrity and confidentiality of stored data and system processes.
System Instability: The out-of-bounds access can lead to system crashes or unpredictable behavior, affecting the reliability and performance of systems that rely on audio functionalities.
Spread of Malware: A compromised system may become a launching point for further attacks, including the distribution of malware or involvement in larger coordinated attacks against networks.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.