CVE-2020-27830 : What You Need to Know
Discover the impact of CVE-2020-27830, a vulnerability in Linux Kernel that could lead to a NULL-ptr deref crash. Learn about affected versions and mitigation steps.
A vulnerability was found in Linux Kernel that could lead to a NULL-ptr deref crash in the spk_ttyio_receive_buf2() function.
Understanding CVE-2020-27830
What is CVE-2020-27830?
This CVE identifies a vulnerability in the Linux Kernel that could result in a NULL-ptr deref crash due to improper handling in the spk_ttyio_receive_buf2() function.
The Impact of CVE-2020-27830
The vulnerability could be exploited to cause a crash, potentially leading to a denial of service (DoS) condition.
Technical Details of CVE-2020-27830
Vulnerability Description
The issue arises from the lack of validation in the spk_ttyio_receive_buf2() function, allowing an attacker to trigger a NULL-ptr dereference crash.
Affected Systems and Versions
- Affected Product: Linux Kernel
- Affected Version: kernel 5.9.14
Exploitation Mechanism
The vulnerability can be exploited by sending specially crafted input to the vulnerable function, leading to a NULL-ptr dereference.
Mitigation and Prevention
Immediate Steps to Take
- Apply patches provided by the Linux Kernel maintainers.
- Monitor vendor advisories for updates and apply them promptly.
Long-Term Security Practices
- Regularly update and patch all software components.
- Implement proper input validation mechanisms to prevent such vulnerabilities.
Patching and Updates
Ensure that the affected systems are updated with the latest patches released by the Linux Kernel maintainers.