CVE-2018-20126 Explained : Impact and Mitigation
Learn about CVE-2018-20126, a vulnerability in QEMU that leads to memory leaks in create_cq and create_qp functionalities. Find out how to mitigate this issue and apply necessary patches.
QEMU mishandles errors in hw/rdma/vmw/pvrdma_cmd.c, leading to memory leaks in create_cq and create_qp functionalities.
Understanding CVE-2018-20126
What is CVE-2018-20126?
This CVE involves memory leakage vulnerabilities in QEMU due to error mishandling in specific functionalities.
The Impact of CVE-2018-20126
The vulnerability can result in memory leaks, potentially leading to resource exhaustion and system instability.
Technical Details of CVE-2018-20126
Vulnerability Description
Errors in hw/rdma/vmw/pvrdma_cmd.c in QEMU cause memory leaks during the execution of create_cq and create_qp functions.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
The vulnerability is exploited by triggering the mishandling of errors in the mentioned QEMU functionalities.
Mitigation and Prevention
Immediate Steps to Take
- Apply patches provided by the vendor promptly.
- Monitor vendor advisories for updates and security patches.
Long-Term Security Practices
- Regularly update and patch software to mitigate known vulnerabilities.
- Implement proper error handling mechanisms in software development.
- Conduct regular security assessments and audits.
- Employ network segmentation and access controls.
Patching and Updates
Ensure that all relevant patches and updates are applied to the affected systems to address the memory leakage vulnerability.