CVE-2022-50783
Unknown Unknown - Not Provided
Memory Leak in Linux Kernel mptcp IPv6 Request Destructor

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: mptcp: use proper req destructor for IPv6 Before, only the destructor from TCP request sock in IPv4 was called even if the subflow was IPv6. It is important to use the right destructor to avoid memory leaks with some advanced IPv6 features, e.g. when the request socks contain specific IPv6 options.
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Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-06-16
AI Q&A
2025-12-24
EPSS Evaluated
2026-06-15
NVD
CVE-2022-50783
EUVD
EUVD-2022-55778
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability in the Linux kernel's mptcp (Multipath TCP) implementation involved using the incorrect destructor for IPv6 request sockets. Previously, the destructor for IPv4 TCP request sockets was called even when the subflow was IPv6. This improper handling could lead to memory leaks when advanced IPv6 features or specific IPv6 options were used in request sockets. The fix ensures the correct destructor is used for IPv6 to prevent these memory leaks.

Impact Analysis

The vulnerability can cause memory leaks in the Linux kernel when handling IPv6 subflows with specific IPv6 options in Multipath TCP. Memory leaks can degrade system performance, potentially leading to resource exhaustion or instability over time, especially in systems heavily utilizing IPv6 networking features.

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