CVE-2017-8069 : Exploit Details and Defense Strategies
Discover the impact of CVE-2017-8069 in the Linux kernel 4.9.x. Learn about the exploitation mechanism, affected systems, and mitigation steps to secure your environment.
In the Linux kernel 4.9.x prior to version 4.9.11, a vulnerability exists in the drivers/net/usb/rtl8150.c file when interacting with the CONFIG_VMAP_STACK option. This flaw can be exploited by local users to potentially cause a denial of service, system crash, memory corruption, or other undefined consequences by utilizing multiple virtual pages for a DMA scatterlist.
Understanding CVE-2017-8069
This CVE identifier pertains to a specific vulnerability in the Linux kernel version 4.9.x before 4.9.11.
What is CVE-2017-8069?
The CVE-2017-8069 vulnerability in the Linux kernel allows local users to trigger a denial of service, system crash, memory corruption, or other impacts by misusing virtual pages for a DMA scatterlist.
The Impact of CVE-2017-8069
The vulnerability can lead to a range of consequences, including system crashes, denial of service, memory corruption, and potentially other undefined impacts.
Technical Details of CVE-2017-8069
This section provides technical insights into the vulnerability.
Vulnerability Description
The issue arises from the incorrect interaction of drivers/net/usb/rtl8150.c with the CONFIG_VMAP_STACK option in the Linux kernel 4.9.x before version 4.9.11.
Affected Systems and Versions
- Affected System: Linux kernel 4.9.x
- Affected Version: Before 4.9.11
Exploitation Mechanism
The vulnerability can be exploited by local users leveraging the incorporation of multiple virtual pages for a DMA scatterlist.
Mitigation and Prevention
Protective measures to address the CVE-2017-8069 vulnerability.
Immediate Steps to Take
- Apply relevant patches and updates promptly.
- Monitor official sources for security advisories.
- Restrict system access to trusted users only.
Long-Term Security Practices
- Regularly update and patch the Linux kernel.
- Implement the principle of least privilege for user access.
- Conduct security training for users on best practices.
- Employ intrusion detection and prevention systems.
Patching and Updates
Ensure timely installation of security patches and updates to mitigate the CVE-2017-8069 vulnerability.