CVE-2019-16232 : Vulnerability Insights and Analysis
Learn about CVE-2019-16232, a vulnerability in the Linux kernel 5.2.14 that could allow attackers to trigger a NULL pointer dereference, potentially leading to denial of service or code execution. Find mitigation steps and patching recommendations here.
In the Linux kernel 5.2.14, a vulnerability exists in the if_sdio.c file within drivers/net/wireless/marvell/libertas. This flaw occurs due to the lack of proper validation of the return value of alloc_workqueue, leading to a NULL pointer dereference.
Understanding CVE-2019-16232
This CVE entry highlights a vulnerability in the Linux kernel that could be exploited by attackers.
What is CVE-2019-16232?
The vulnerability in the Linux kernel 5.2.14 arises from a specific issue in the if_sdio.c file, impacting the proper handling of return values and resulting in a NULL pointer dereference.
The Impact of CVE-2019-16232
The vulnerability could allow a malicious actor to trigger a NULL pointer dereference, potentially leading to a denial of service (DoS) condition or arbitrary code execution.
Technical Details of CVE-2019-16232
This section delves into the technical aspects of the CVE.
Vulnerability Description
The issue in drivers/net/wireless/marvell/libertas/if_sdio.c in the Linux kernel 5.2.14 stems from the failure to validate the return value of alloc_workqueue, which can result in a NULL pointer dereference.
Affected Systems and Versions
- Affected Version: Linux kernel 5.2.14
- Systems: Any system running the vulnerable kernel version
Exploitation Mechanism
The vulnerability can be exploited by crafting specific inputs to trigger the improper handling of return values, leading to the NULL pointer dereference.
Mitigation and Prevention
Protecting systems from CVE-2019-16232 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply relevant patches provided by the Linux kernel maintainers or distribution vendors.
- Monitor security advisories for updates and apply them promptly.
Long-Term Security Practices
- Regularly update the kernel and system components to mitigate known vulnerabilities.
- Implement proper input validation and error checking in code to prevent similar issues.
Patching and Updates
- Ensure timely installation of security patches released by the Linux kernel community or respective distribution vendors.