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Vulnerability DatabaseCVE-2022-49929
CVE-2022-49929:
Linux Kernel vulnerability analysis and mitigation
Overview
CVE-2022-49929 is a vulnerability discovered in the Linux kernel affecting the RDMA/rxe subsystem. The issue was identified and reported in May 2025, specifically related to a memory reference counting issue in the RESPSTERRRNR state handling (NVD).
Technical details
The vulnerability stems from a memory reference counting bug where rxerecheckmr() increases the memory region's reference count (mr's refcnt) but fails to properly decrease it in the RESPSTERR_RNR state. This leads to a potential memory leak in the RDMA/rxe subsystem (Red Hat). The issue has been assigned a CVSS v3.1 base score of 5.5, indicating moderate severity (Red Hat).
Impact
The vulnerability can result in memory leaks in the Linux kernel's RDMA subsystem, potentially leading to resource exhaustion over time (Wiz).
Mitigation and workarounds
Red Hat has deferred fixes for affected versions of Red Hat Enterprise Linux 9 and kernel-rt packages. The vulnerability has been resolved in the Linux kernel through a patch that properly handles reference counting in the RESPSTERRRNR state (Red Hat).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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