Bug 2424983 (CVE-2023-54028)

Summary: CVE-2023-54028 kernel: Linux kernel: Denial of Service vulnerability in RDMA/rxe component
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel's Remote Direct Memory Access (RDMA) subsystem, specifically within the rxe component. A local user could trigger a kernel panic by causing an error during the setup of a Queue Pair (QP) in rxe_create_qp(). This occurs when the system attempts to clean up resources by accessing an uninitialized spinlock, leading to a Denial of Service (DoS).
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Description OSIDB Bzimport 2025-12-24 12:05:50 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Fix the error "trying to register non-static key in rxe_cleanup_task"

In the function rxe_create_qp(), rxe_qp_from_init() is called to
initialize qp, internally things like rxe_init_task are not setup until
rxe_qp_init_req().

If an error occurred before this point then the unwind will call
rxe_cleanup() and eventually to rxe_qp_do_cleanup()/rxe_cleanup_task()
which will oops when trying to access the uninitialized spinlock.

If rxe_init_task is not executed, rxe_cleanup_task will not be called.
Comment 1 Alexander B 2025-12-25 11:04:10 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122436-CVE-2023-54028-2399@gregkh/T