CVE-2018-20788 : Security Advisory and Response
Learn about CVE-2018-20788 involving integer overflows in the led driver file for custom Linux kernels on Xiaomi Redmi 6pro daisy-o-oss phone, potentially leading to denial of service. Find mitigation steps and prevention measures here.
This CVE involves integer overflows in the led driver file, leds-aw2023.c, designed for custom Linux kernels on the Xiaomi Redmi 6pro daisy-o-oss phone, potentially leading to denial of service.
Understanding CVE-2018-20788
This CVE identifies a vulnerability in the led driver file used in specific custom Linux kernels on the Xiaomi Redmi 6pro daisy-o-oss phone.
What is CVE-2018-20788?
The CVE-2018-20788 vulnerability is caused by integer overflows in the led driver file, leds-aw2023.c, due to a left-shifting operation with a potentially dangerous right-hand operand.
The Impact of CVE-2018-20788
Exploiting this vulnerability with a carefully crafted application can result in a denial of service on the affected device.
Technical Details of CVE-2018-20788
This section provides more technical insights into the CVE.
Vulnerability Description
The led driver file for custom Linux kernels on the Xiaomi Redmi 6pro daisy-o-oss phone contains integer overflows due to a left-shifting operation, which can be exploited for denial of service.
Affected Systems and Versions
- Affected Product: Not applicable
- Affected Vendor: Not applicable
- Affected Version: Not applicable
Exploitation Mechanism
The vulnerability arises from a left-shifting operation in the led driver file, leds-aw2023.c, where the right-hand operand can exceed the integer length, potentially leading to denial of service.
Mitigation and Prevention
Protecting systems from CVE-2018-20788 requires specific actions to mitigate risks.
Immediate Steps to Take
- Monitor for security advisories related to this CVE
- Implement vendor-recommended patches or updates promptly
- Consider restricting access to vulnerable systems
Long-Term Security Practices
- Regularly update and patch all software and firmware
- Conduct security assessments and audits periodically
- Educate users on safe computing practices
Patching and Updates
- Apply patches provided by the vendor to address the vulnerability
- Keep systems up to date with the latest security fixes and updates