Critical Vulnerability in Linux Package: Aborting Waiting Processes in RXRPC Calls
Summary
DEBIAN-CVE-2023-53218: In the Linux kernel, the following vulnerability has been resolved: rxrpc: Make it so that a waiting process can be aborted When sendmsg() creates an rxrpc call, it queues it to wait for a connection and channel to be as... Affects linux versions < 6.3.7-1. Fixed in 6.3.7-1. How to fix ↓
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Background
The Linux kernel is a core component of the Debian operating system, responsible for managing hardware resources and providing essential services for software applications. It is known for its stability, performance, and security features. However, like any complex software, it can have vulnerabilities that may affect its functionality and security. This specific vulnerability affects the RXRPC protocol, which is used for remote procedure calls, allowing processes to communicate over a network.
Vulnerability Detail
In the Linux kernel, a vulnerability has been identified in the RXRPC implementation. When the sendmsg() function is called to create an RXRPC call, it queues the call to wait for a connection and channel assignment. If the sendmsg() call is interrupted before a connection is established, subsequent calls will fail with an EBUSY error until the assignment is made. This can lead to a situation where a waiting process cannot be aborted, causing potential delays and resource management issues. The vulnerability arises from the need to ensure that the call timer does not start if a connection is not yet assigned, preventing system crashes or unexpected behavior.
How To Fix
Minimum fixed version
6.3.7-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade linuxTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds provided for this vulnerability. It is recommended to apply the patch as soon as it is available to mitigate any risks associated with this issue.
Conclusion
The identified vulnerability in the Linux kernel's RXRPC implementation poses significant risks related to process management and system stability. Users are strongly encouraged to update to the patched version 6.3.7-1 to ensure their systems are secure. Regular monitoring for vulnerabilities using tools like Vulert can help maintain the integrity of your software.
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FAQ
The vulnerability can lead to resource management issues where processes cannot be aborted, potentially causing delays in system operations.
You can use tools like Vulert to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected.
While there are no specific workarounds, it is crucial to plan for an update as soon as possible to mitigate risks.
Yes, this vulnerability affects specific versions of the Linux package in Debian 13 and 14, particularly those before version 6.3.7-1.
More details can be found in the official Debian CVE database at https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-53218.json.
References
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