CVE-2019-19064 : Exploit Details and Defense Strategies
Learn about CVE-2019-19064, a memory leak vulnerability in the Linux kernel up to version 5.3.11 that allows attackers to trigger denial of service attacks. Find out the impact, affected systems, and mitigation steps.
A memory leak vulnerability in the fsl_lpspi_probe() function within the Linux kernel up to version 5.3.11 has been identified. This CVE allows attackers to potentially execute a denial of service attack by triggering specific failures.
Understanding CVE-2019-19064
This CVE involves a memory leak issue in a specific function within the Linux kernel, potentially leading to denial of service attacks.
What is CVE-2019-19064?
The fsl_lpspi_probe() function in the Linux kernel up to version 5.3.11 has a memory leak problem that can be exploited by attackers to cause denial of service by triggering failures.
The Impact of CVE-2019-19064
- Attackers can exploit this vulnerability to potentially execute denial of service attacks by intentionally causing failures in the pm_runtime_get_sync() function.
- There are conflicting opinions among third parties regarding the severity of this vulnerability due to the limited control attackers have during probe time.
Technical Details of CVE-2019-19064
This section provides more technical insights into the vulnerability.
Vulnerability Description
The fsl_lpspi_probe() function in drivers/spi/spi-fsl-lpspi.c within the Linux kernel up to version 5.3.11 has a memory leak issue that can be abused by attackers.
Affected Systems and Versions
- The vulnerability affects the Linux kernel up to version 5.3.11.
Exploitation Mechanism
- Attackers can exploit this vulnerability by intentionally triggering failures in the pm_runtime_get_sync() function.
Mitigation and Prevention
To address and prevent exploitation of CVE-2019-19064, consider the following steps:
Immediate Steps to Take
- Monitor for any unusual memory consumption or denial of service symptoms.
- Apply relevant patches and updates provided by the Linux kernel maintainers.
Long-Term Security Practices
- Regularly update the Linux kernel to the latest stable version to mitigate known vulnerabilities.
Patching and Updates
- Stay informed about security advisories and promptly apply patches released by the Linux kernel maintainers.