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CVE-2025-21717 – Mellanox Technologies mlx5e Node ID Validation Vulnerability

The following table lists the changes that have been made to the
CVE-2025-21717 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

    Feb. 27, 2025

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

    net/mlx5e: add missing cpu_to_node to kvzalloc_node in mlx5e_open_xdpredirect_sq

    kvzalloc_node is not doing a runtime check on the node argument
    (__alloc_pages_node_noprof does have a VM_BUG_ON, but it expands to
    nothing on !CONFIG_DEBUG_VM builds), so doing any ethtool/netlink
    operation that calls mlx5e_open on a CPU that’s larger that MAX_NUMNODES
    triggers OOB access and panic (see the trace below).

    Add missing cpu_to_node call to convert cpu id to node id.

    [ 165.427394] mlx5_core 0000:5c:00.0 beth1: Link up
    [ 166.479327] BUG: unable to handle page fault for address: 0000000800000010
    [ 166.494592] #PF: supervisor read access in kernel mode
    [ 166.505995] #PF: error_code(0x0000) – not-present page
    …
    [ 166.816958] Call Trace:
    [ 166.822380]
    [ 166.827034] ? __die_body+0x64/0xb0
    [ 166.834774] ? page_fault_oops+0x2cd/0x3f0
    [ 166.843862] ? exc_page_fault+0x63/0x130
    [ 166.852564] ? asm_exc_page_fault+0x22/0x30
    [ 166.861843] ? __kvmalloc_node_noprof+0x43/0xd0
    [ 166.871897] ? get_partial_node+0x1c/0x320
    [ 166.880983] ? deactivate_slab+0x269/0x2b0
    [ 166.890069] ___slab_alloc+0x521/0xa90
    [ 166.898389] ? __kvmalloc_node_noprof+0x43/0xd0
    [ 166.908442] __kmalloc_node_noprof+0x216/0x3f0
    [ 166.918302] ? __kvmalloc_node_noprof+0x43/0xd0
    [ 166.928354] __kvmalloc_node_noprof+0x43/0xd0
    [ 166.938021] mlx5e_open_channels+0x5e2/0xc00
    [ 166.947496] mlx5e_open_locked+0x3e/0xf0
    [ 166.956201] mlx5e_open+0x23/0x50
    [ 166.963551] __dev_open+0x114/0x1c0
    [ 166.971292] __dev_change_flags+0xa2/0x1b0
    [ 166.980378] dev_change_flags+0x21/0x60
    [ 166.988887] do_setlink+0x38d/0xf20
    [ 166.996628] ? ep_poll_callback+0x1b9/0x240
    [ 167.005910] ? __nla_validate_parse.llvm.10713395753544950386+0x80/0xd70
    [ 167.020782] ? __wake_up_sync_key+0x52/0x80
    [ 167.030066] ? __mutex_lock+0xff/0x550
    [ 167.038382] ? security_capable+0x50/0x90
    [ 167.047279] rtnl_setlink+0x1c9/0x210
    [ 167.055403] ? ep_poll_callback+0x1b9/0x240
    [ 167.064684] ? security_capable+0x50/0x90
    [ 167.073579] rtnetlink_rcv_msg+0x2f9/0x310
    [ 167.082667] ? rtnetlink_bind+0x30/0x30
    [ 167.091173] netlink_rcv_skb+0xb1/0xe0
    [ 167.099492] netlink_unicast+0x20f/0x2e0
    [ 167.108191] netlink_sendmsg+0x389/0x420
    [ 167.116896] __sys_sendto+0x158/0x1c0
    [ 167.125024] __x64_sys_sendto+0x22/0x30
    [ 167.133534] do_syscall_64+0x63/0x130
    [ 167.141657] ? __irq_exit_rcu.llvm.17843942359718260576+0x52/0xd0
    [ 167.155181] entry_SYSCALL_64_after_hwframe+0x4b/0x53
    Added Reference https://git.kernel.org/stable/c/979284535aaf12a287a2f43d9d5dfcbdc1dc4cac
    Added Reference https://git.kernel.org/stable/c/a275db45b4161d01716559dd7557db9ea0450952
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