CVE-2026-53177 bnxt_en: Fix NULL pointer dereference

[
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    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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      "drivers/net/ethernet/broadcom/bnxt/bnxt.c"
    ],
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    "programFiles": [
      "drivers/net/ethernet/broadcom/bnxt/bnxt.c"
    ],
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      {
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        "versionType": "semver"
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      {
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]