CVE-2023-54055
Unknown Unknown - Not Provided
Memory Leak in Linux Kernel RDMA IRDMA PBLE Objects Fixed

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: RDMA/irdma: Fix memory leak of PBLE objects On rmmod of irdma, the PBLE object memory is not being freed. PBLE object memory are not statically pre-allocated at function initialization time unlike other HMC objects. PBLEs objects and the Segment Descriptors (SD) for it can be dynamically allocated during scale up and SD's remain allocated till function deinitialization. Fix this leak by adding IRDMA_HMC_IW_PBLE to the iw_hmc_obj_types[] table and skip pbles in irdma_create_hmc_obj but not in irdma_del_hmc_objects().
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Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-05-07
AI Q&A
2025-12-24
EPSS Evaluated
2026-05-05
NVD
CVE-2023-54055
EUVD
EUVD-2023-60271
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a memory leak in the Linux kernel's RDMA/irdma component. Specifically, when the irdma module is removed (rmmod), the memory allocated for PBLE (Page Buffer List Entry) objects is not freed properly. Unlike other HMC objects, PBLE objects and their Segment Descriptors are dynamically allocated during scaling and remain allocated until function deinitialization. The fix involves adjusting the handling of PBLE objects to ensure their memory is freed correctly during module removal.


How can this vulnerability impact me? :

The memory leak caused by this vulnerability can lead to increased memory usage over time when the irdma module is removed and reloaded repeatedly. This can degrade system performance and stability, potentially causing resource exhaustion or crashes if the leak is significant and persistent.


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