CVE-2020-11608 : Security Advisory and Response

An issue was discovered in the Linux kernel before 5.6.1. The vulnerability in drivers/media/usb/gspca/ov519.c can lead to NULL pointer dereferences, specifically in ov511_mode_init_regs and ov518_mode_init_regs when there are zero endpoints, identified as CID-998912346c0d.

Understanding CVE-2020-11608

This CVE pertains to a vulnerability in the Linux kernel that can result in NULL pointer dereferences under certain conditions.

What is CVE-2020-11608?

The vulnerability in the Linux kernel before version 5.6.1 allows for NULL pointer dereferences in specific functions within the ov519.c driver file, potentially leading to system instability or crashes.

The Impact of CVE-2020-11608

The vulnerability can be exploited by an attacker to cause a denial of service (DoS) condition on the affected system, potentially resulting in system crashes or instability.

Technical Details of CVE-2020-11608

This section provides more in-depth technical details about the CVE.

Vulnerability Description

The issue arises in the Linux kernel's ov519.c driver file, specifically in the functions ov511_mode_init_regs and ov518_mode_init_regs when there are zero endpoints, allowing for NULL pointer dereferences.

Affected Systems and Versions

Linux kernel versions before 5.6.1

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious inputs to trigger the NULL pointer dereference, leading to a DoS condition.

Mitigation and Prevention

Protecting systems from CVE-2020-11608 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the latest security patches provided by the Linux kernel maintainers.
Monitor official sources for updates and advisories related to this vulnerability.

Long-Term Security Practices

Regularly update the Linux kernel to the latest stable version to mitigate known vulnerabilities.
Implement proper input validation mechanisms to prevent malicious inputs that could trigger such vulnerabilities.

Patching and Updates

Ensure timely installation of security updates and patches released by the Linux kernel maintainers to address CVE-2020-11608.