Deadlock Vulnerability in mptcp Package
Summary
GSD-2021-1002749: mptcp: fix deadlock in __mptcp_push_pending(). Affects Kernel versions >= 1b3e7ede1365a24db1b4fd837e58a595f52fa4ad, < 23311b92755ffa9087332d1bb8c71c0f6a10cc08. No fix is published. How to fix ↓
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Background
The mptcp package is a component of the Linux Kernel ecosystem. It provides support for Multipath TCP (MPTCP), which allows for the simultaneous use of multiple network paths for a single TCP connection. MPTCP enhances network reliability, performance, and resilience. However, a vulnerability has been discovered in the package that can lead to a deadlock situation.
Vulnerability Detail
The vulnerability, identified as GSD-2021-1002749, specifically affects the __mptcp_push_pending() function within the mptcp package. This function is responsible for pushing pending data to the MPTCP subflows. The vulnerability can result in a deadlock, where multiple threads or processes are unable to proceed, leading to a system freeze or unresponsiveness. The impact and attack plausibility of this vulnerability have not been proven yet.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been mentioned for this vulnerability. It is recommended to apply the fix by updating the kernel to the patched version.
Conclusion
The mptcp package in the Linux Kernel is vulnerable to a deadlock issue in the __mptcp_push_pending() function. To mitigate this vulnerability, it is crucial to update the kernel to version v5.15.11 or a later version that includes the fix. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The mptcp package is a component of the Linux Kernel ecosystem that enables Multipath TCP (MPTCP), allowing for the simultaneous use of multiple network paths for a single TCP connection.
The vulnerability can lead to a deadlock situation, causing system freeze or unresponsiveness. However, the actual impact and attack plausibility have not been proven yet.
To fix the vulnerability, update the Linux Kernel to version v5.15.11 or any subsequent version that includes the fix. Follow the official documentation and guidelines provided by the Linux Kernel development team for updating the kernel.
No specific workaround has been mentioned for this vulnerability. It is recommended to apply the fix by updating the kernel to the patched version.
For more details about this vulnerability, refer to the source link provided in the database specific information section of the vulnerability report.
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