CVE-2022-50666
Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-12-09

Last updated on: 2025-12-09

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/siw: Fix QP destroy to wait for all references dropped. Delay QP destroy completion until all siw references to QP are dropped. The calling RDMA core will free QP structure after successful return from siw_qp_destroy() call, so siw must not hold any remaining reference to the QP upon return. A use-after-free was encountered in xfstest generic/460, while testing NFSoRDMA. Here, after a TCP connection drop by peer, the triggered siw_cm_work_handler got delayed until after QP destroy call, referencing a QP which has already freed.

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Meta Information

Published
2025-12-09
Last Modified
2025-12-09
Generated
2026-07-06
AI Q&A
2025-12-09
EPSS Evaluated
2026-07-05
NVD
CVE-2022-50666
EUVD
EUVD-2022-55739

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is a use-after-free issue in the Linux kernel's RDMA subsystem, specifically in the siw (SoftiWARP) driver. It occurs because the destruction of a Queue Pair (QP) does not wait for all references to the QP to be released. As a result, after a TCP connection drop, a delayed handler may reference a QP that has already been freed, leading to potential memory corruption or crashes.

Impact Analysis

The vulnerability can lead to use-after-free conditions causing memory corruption, system instability, or crashes in systems using the affected RDMA siw driver. This can affect the reliability and security of systems relying on RDMA over TCP connections, potentially leading to denial of service or other unintended behaviors.

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