Vulnerability in io_uring: Fix ltout Double Free on Completion Race
Summary
GSD-2021-1000805: io_uring: fix ltout double free on completion race. Affects Kernel versions >= 90cd7e424969d29aff653333b4dcb4e2e199d791, < 1f64f5e903b9d1d157875721e02adadc9d6f0a5d. 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 io_uring package is a component of the Linux Kernel that provides an interface for asynchronous I/O operations. It allows applications to efficiently perform I/O operations without blocking the execution of other tasks. The package is widely used in Linux-based systems and is critical for the performance of various applications.
Vulnerability Detail
The identified vulnerability in io_uring is related to a double free on completion race. This race condition occurs when a completion event is processed, leading to a potential double free of resources. An attacker could potentially exploit this vulnerability to execute arbitrary code or cause a denial-of-service condition. The vulnerability was introduced in version v5.11 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 specific workaround has been provided for this vulnerability.
Conclusion
The vulnerability in io_uring that allowed for a double free on completion race has been addressed in the latest version of the Linux Kernel. It is highly recommended to update to version v5.12.10 or later to mitigate the risk of exploitation. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
io_uring is a component of the Linux Kernel that provides an interface for asynchronous I/O operations.
A double free vulnerability occurs when a program attempts to free a memory block that has already been freed. This can lead to memory corruption and potentially allow an attacker to execute arbitrary code.
A race condition is a situation in which the behavior of a program depends on the relative timing of events. In the case of this vulnerability, the race condition occurs when processing a completion event, leading to the double free of resources.
The impact of this vulnerability can vary depending on the specific exploitation scenario. It could potentially allow an attacker to execute arbitrary code or cause a denial-of-service condition.
To update the Linux Kernel, you can obtain the latest version from the official Linux Kernel repository and follow the installation instructions provided.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
