CVE-2019-9111 Explained : Impact and Mitigation
Learn about CVE-2019-9111 affecting the msm gpu driver in custom Linux kernels on Xiaomi perseus-p-oss MIX 3 devices. Discover the impact, technical details, and mitigation steps.
CVE-2019-9111 was published on February 25, 2019, and affects the msm gpu driver in custom Linux kernels on the Xiaomi perseus-p-oss MIX 3 device. The vulnerability allows a malicious application on a rooted device to cause a device crash through a crafted syscall.
Understanding CVE-2019-9111
This CVE identifies an integer overflow and OOPS in the msm gpu driver due to missing checks for the count argument in the sde_evtlog_filter_write function.
What is CVE-2019-9111?
The vulnerability in the msm gpu driver on Xiaomi perseus-p-oss MIX 3 devices allows a malicious application to exploit an integer overflow and OOPS, leading to a device crash.
The Impact of CVE-2019-9111
The vulnerability can be exploited by a malicious application on a rooted device to cause a device crash through a crafted syscall, potentially disrupting device functionality.
Technical Details of CVE-2019-9111
The following technical details outline the specifics of CVE-2019-9111:
Vulnerability Description
The vulnerability arises from an integer overflow and OOPS in the msm gpu driver on Xiaomi perseus-p-oss MIX 3 devices due to missing checks for the count argument in the sde_evtlog_filter_write function.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions prior to 2018-11-26 are affected.
Exploitation Mechanism
The vulnerability can be exploited by a malicious application on a rooted device through a crafted syscall, triggering a device crash.
Mitigation and Prevention
To address CVE-2019-9111, consider the following mitigation strategies:
Immediate Steps to Take
- Avoid running untrusted applications on rooted devices.
- Regularly update the device's software and firmware.
Long-Term Security Practices
- Implement proper input validation and bounds checking in device drivers.
- Monitor for unusual device behavior that may indicate exploitation attempts.
Patching and Updates
- Apply security patches provided by the device manufacturer to address the vulnerability.