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CVE-2022-49929 – “RDMA rxe Memory Reference Count Leak Vulnerability”

The following table lists the changes that have been made to the
CVE-2022-49929 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 01, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved:

    RDMA/rxe: Fix mr leak in RESPST_ERR_RNR

    rxe_recheck_mr() will increase mr’s ref_cnt, so we should call rxe_put(mr)
    to drop mr’s ref_cnt in RESPST_ERR_RNR to avoid below warning:

    WARNING: CPU: 0 PID: 4156 at drivers/infiniband/sw/rxe/rxe_pool.c:259 __rxe_cleanup+0x1df/0x240 [rdma_rxe]
    …
    Call Trace:
    rxe_dereg_mr+0x4c/0x60 [rdma_rxe]
    ib_dereg_mr_user+0xa8/0x200 [ib_core]
    ib_mr_pool_destroy+0x77/0xb0 [ib_core]
    nvme_rdma_destroy_queue_ib+0x89/0x240 [nvme_rdma]
    nvme_rdma_free_queue+0x40/0x50 [nvme_rdma]
    nvme_rdma_teardown_io_queues.part.0+0xc3/0x120 [nvme_rdma]
    nvme_rdma_error_recovery_work+0x4d/0xf0 [nvme_rdma]
    process_one_work+0x582/0xa40
    ? pwq_dec_nr_in_flight+0x100/0x100
    ? rwlock_bug.part.0+0x60/0x60
    worker_thread+0x2a9/0x700
    ? process_one_work+0xa40/0xa40
    kthread+0x168/0x1a0
    ? kthread_complete_and_exit+0x20/0x20
    ret_from_fork+0x22/0x30
    Added Reference https://git.kernel.org/stable/c/50b35ad2864a9d66f802f9ce193d99bbef64e219
    Added Reference https://git.kernel.org/stable/c/b5f9a01fae42684648c2ee3cd9985f80c67ab9f7
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