CVE-2022-50135
Linux Kernel vulnerability analysis and mitigation

Overview

CVE-2022-50135 is a vulnerability in the Linux kernel's RDMA/rxe component that was discovered and disclosed in June 2025. The vulnerability specifically affects the queue pair (QP) cleanup functionality in the RDMA/rxe subsystem (NVD).

Technical details

The vulnerability stems from a null pointer dereference issue in the rxeqpdocleanup function. The issue occurs when rxecreateqp calls rxeqpfrominit, and if an error occurs, the error handler in rxeqpfrominit sets both scq and rcq to NULL. Subsequently, rxecreateqp calls rxeput to handle qp, which leads to rxeqpdocleanup being called. The vulnerability manifests when rxeqpdocleanup directly accesses scq and rcq before checking if they are NULL, resulting in a null pointer dereference (NVD).

Impact

The vulnerability can lead to a kernel crash due to the null pointer dereference, potentially causing system instability or denial of service conditions (NVD).

Mitigation and workarounds

The vulnerability has been resolved in the Linux kernel through patches that implement proper null pointer checking before accessing the scq and rcq pointers in the rxeqpdo_cleanup function (NVD).

Additional resources


SourceThis report was generated using AI

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