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CVE-2022-49925 – “Linux RDMA Core Null Pointer Dereference Vulnerability”

The following table lists the changes that have been made to the
CVE-2022-49925 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/core: Fix null-ptr-deref in ib_core_cleanup()

    KASAN reported a null-ptr-deref error:

    KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]
    CPU: 1 PID: 379
    Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
    RIP: 0010:destroy_workqueue+0x2f/0x740
    RSP: 0018:ffff888016137df8 EFLAGS: 00000202
    …
    Call Trace:
    ib_core_cleanup+0xa/0xa1 [ib_core]
    __do_sys_delete_module.constprop.0+0x34f/0x5b0
    do_syscall_64+0x3a/0x90
    entry_SYSCALL_64_after_hwframe+0x63/0xcd
    RIP: 0033:0x7fa1a0d221b7
    …

    It is because the fail of roce_gid_mgmt_init() is ignored:

    ib_core_init()
    roce_gid_mgmt_init()
    gid_cache_wq = alloc_ordered_workqueue # fail
    …
    ib_core_cleanup()
    roce_gid_mgmt_cleanup()
    destroy_workqueue(gid_cache_wq)
    # destroy an unallocated wq

    Fix this by catching the fail of roce_gid_mgmt_init() in ib_core_init().
    Added Reference https://git.kernel.org/stable/c/07c0d131cc0fe1f3981a42958fc52d573d303d89
    Added Reference https://git.kernel.org/stable/c/6b3d5dcb12347f3518308c2c9d2cf72453a3e1e5
    Added Reference https://git.kernel.org/stable/c/ab817f75e5e0fa58d9be0825da6a7b7d8a1fa1d9
    Added Reference https://git.kernel.org/stable/c/af8fb5a0600e9ae29950e9422a032c3c22649ee5
    Added Reference https://git.kernel.org/stable/c/d360e875c011a005628525bf290322058927e7dc
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