Bug 2373477 (CVE-2022-50127)

Summary: CVE-2022-50127 kernel: RDMA/rxe: Fix error unwind in rxe_create_qp()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-06-18 12:04:45 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/rxe: Fix error unwind in rxe_create_qp()

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

If an error occures 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.

Move the spinlock initializations earlier before any failures.
Comment 1 Avinash Hanwate 2025-06-20 01:23:30 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025061813-CVE-2022-50127-df59@gregkh/T