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CVE-2025-22010 – “Huawei RDMA Linux Kernel Soft Lockup Vulnerability”

The following table lists the changes that have been made to the
CVE-2025-22010 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

    Apr. 08, 2025

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

    RDMA/hns: Fix soft lockup during bt pages loop

    Driver runs a for-loop when allocating bt pages and mapping them with
    buffer pages. When a large buffer (e.g. MR over 100GB) is being allocated,
    it may require a considerable loop count. This will lead to soft lockup:

    watchdog: BUG: soft lockup – CPU#27 stuck for 22s!
    …
    Call trace:
    hem_list_alloc_mid_bt+0x124/0x394 [hns_roce_hw_v2]
    hns_roce_hem_list_request+0xf8/0x160 [hns_roce_hw_v2]
    hns_roce_mtr_create+0x2e4/0x360 [hns_roce_hw_v2]
    alloc_mr_pbl+0xd4/0x17c [hns_roce_hw_v2]
    hns_roce_reg_user_mr+0xf8/0x190 [hns_roce_hw_v2]
    ib_uverbs_reg_mr+0x118/0x290

    watchdog: BUG: soft lockup – CPU#35 stuck for 23s!
    …
    Call trace:
    hns_roce_hem_list_find_mtt+0x7c/0xb0 [hns_roce_hw_v2]
    mtr_map_bufs+0xc4/0x204 [hns_roce_hw_v2]
    hns_roce_mtr_create+0x31c/0x3c4 [hns_roce_hw_v2]
    alloc_mr_pbl+0xb0/0x160 [hns_roce_hw_v2]
    hns_roce_reg_user_mr+0x108/0x1c0 [hns_roce_hw_v2]
    ib_uverbs_reg_mr+0x120/0x2bc

    Add a cond_resched() to fix soft lockup during these loops. In order not
    to affect the allocation performance of normal-size buffer, set the loop
    count of a 100GB MR as the threshold to call cond_resched().
    Added Reference https://git.kernel.org/stable/c/13a52f6c9ff99f7d88f81da535cb4e85eade662b
    Added Reference https://git.kernel.org/stable/c/25655580136de59ec89f09089dd28008ea440fc9
    Added Reference https://git.kernel.org/stable/c/4104b0023ff66b5df900d23dbf38310893deca79
    Added Reference https://git.kernel.org/stable/c/975355faba56c0751292ed15a90c3e2c7dc0aad6
    Added Reference https://git.kernel.org/stable/c/9ab20fec7a1ce3057ad86afd27bfd08420b7cd11
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