NULL pointer dereference in convert_variable_location() in Kernel
Summary
UVI-2021-1000795: perf probe: Fix NULL pointer dereference in convert_variable_location(). Affects Kernel versions >= 66f69b2197167cb99330c77a550da50f1f597abc, < eba7c76a5651392a9132c54aceddc5af8cfb0938. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel is a crucial component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. However, a vulnerability has been identified in the Kernel that affects the convert_variable_location() function in the perf probe module.
Vulnerability Detail
The vulnerability arises due to a NULL pointer dereference in the convert_variable_location() function of the perf probe module. This vulnerability can be exploited by an attacker to cause a denial of service (DoS) condition or potentially execute arbitrary code. The issue was introduced in version v5.5 of the Linux Kernel and has been fixed in version v5.12.10.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
No workaround has been mentioned for this vulnerability.
Conclusion
In conclusion, a vulnerability has been identified in the Kernel that can result in a NULL pointer dereference in the convert_variable_location() function of the perf probe module. This vulnerability can lead to a denial of service (DoS) condition or potential execution of arbitrary code. It is recommended to update the Linux Kernel to version v5.12.10 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The vulnerability can lead to a denial of service (DoS) condition or potential execution of arbitrary code.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file and the Vulert Playground will provide real-time alerts for open-source vulnerabilities.
Yes, a patch has been released in version v5.12.10 of the Linux Kernel. It is recommended to update to this version or later to fix the vulnerability.
The exact attack vector and exploitability of this vulnerability have not been proven. However, it is possible that an attacker could exploit this vulnerability remotely.
There are no known instances of this vulnerability being exploited in the wild at the time of this report.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
