What’s Vulnerable › Vulnerabilities

CVE-2023-54028: RDMA/rxe: Fix the error "trying to register non-static key in rxe_cleanup_task"

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-24 · updated 2026-06-17

Description

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.

Affected products

• Linux kernel: 4.8 — fixed in 6.4

How to fix

Upgrade to a fixed version: Linux kernel 6.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0d938264fcfe4927e54f0e519da05af1d5d720b4
• https://git.kernel.org/stable/c/3236221bb8e4de8e3d0c8385f634064fb26b8e38
• https://git.kernel.org/stable/c/b2b1ddc457458fecd1c6f385baa9fbda5f0c63ad
• https://git.kernel.org/stable/c/c8473cd5b301279a41dc75e5afb26b3d5223b6c7

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