CVE-2023-54028 RDMA/rxe: Fix the error "trying to register non-static key in rxe_cleanup_task"
A null pointer dereference in the Linux kernel RDMA/rxe driver allows remote attackers to cause a denial of service via crafted packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-54028?
CVE-2023-54028 is a vulnerability in Linux, published on 24 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2023-54028?
How do I fix CVE-2023-54028?
Apply the vendor's patch.
Is CVE-2023-54028 being exploited?
There is no known exploitation of CVE-2023-54028 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2023-54028, DEBIAN-CVE-2023-54028, GHSA-4jmf-j564-cpmx, ROOT-OS-DEBIAN-11-CVE-2023-54028, ROOT-OS-UBUNTU-2204-CVE-2023-54028, UBUNTU-CVE-2023-54028.