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Vulnerability DatabaseCVE-2022-50136

CVE-2022-50136: 
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2022-50136 affects the Linux kernel's RDMA/siw (Software iWARP) component. The vulnerability was disclosed on June 18, 2025, and involves a bug in the handling of MPA (Marker PDU Aligned) replies that can trigger a kernel bug when siw_recv_mpa_rr returns -EAGAIN (NVD Database, Wiz Database).

Technical details

The vulnerability occurs when siw_recv_mpa_rr returns -EAGAIN, indicating that the MPA reply hasn't been received completely. In this case, the system incorrectly reports an IW_CM_EVENT_CONNECT_REPLY event, which can trigger a kernel BUG at drivers/infiniband/core/iwcm.c:894. The issue can be reproduced using a simple test case with server running 'ib_send_lat' and client running 'ib_send_lat -R' (NVD Database).

Impact

When triggered, this vulnerability causes a kernel bug that results in a system crash, leading to a denial of service condition. The bug manifests in the iw_cm workqueue handler, affecting the system's RDMA (Remote Direct Memory Access) functionality (Wiz Database).

Mitigation and workarounds

The vulnerability has been resolved in the Linux kernel through a patch that corrects the handling of MPA replies in the siw_recv_mpa_rr function. System administrators should apply the latest kernel updates that include this fix (Wiz Database).

Additional resources

Source: This report was generated using AI

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