GHSA-FGQH-527Q-6HX4

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-25 09:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

bnxt_en: Fix NULL pointer dereference

PCIe errors detected by a Root Port or Downstream Port cause error recovery services to run on all subordinate devices regardless of administrative state.

The .error_detected() callback, bnxt_io_error_detected(), disables and synchronizes IRQs via bnxt_disable_int_sync(), which calls bnxt_cp_num_to_irq_num() to map completion rings to IRQs using bp->bnapi.

Since bp->bnapi is allocated on NIC open and freed on NIC close, PCIe error recovery on a closed NIC can dereference a NULL pointer.

Check if bp->bnapi is NULL before disabling and synchronizing IRQs.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53177"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:35Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Fix NULL pointer dereference\n\nPCIe errors detected by a Root Port or Downstream Port cause error\nrecovery services to run on all subordinate devices regardless of\nadministrative state.\n\nThe .error_detected() callback, bnxt_io_error_detected(), disables\nand synchronizes IRQs via bnxt_disable_int_sync(), which calls\nbnxt_cp_num_to_irq_num() to map completion rings to IRQs using\nbp-\u003ebnapi.\n\nSince bp-\u003ebnapi is allocated on NIC open and freed on NIC close, PCIe\nerror recovery on a closed NIC can dereference a NULL pointer.\n\nCheck if bp-\u003ebnapi is NULL before disabling and synchronizing IRQs.",
  "id": "GHSA-fgqh-527q-6hx4",
  "modified": "2026-06-25T09:31:20Z",
  "published": "2026-06-25T09:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53177"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08e57d014ea19f303d5d57a849beb846f37788b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1a418ad0e5e525d1d117dd1601681f75455af320"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3884976f87448e269908ae61bd5d62d54ce9c0c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/580844a9683afe7974856dd5b7886447435b3474"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59c5a3e69c7630a811565937e64be70b08436761"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/964b1c3eb71afe58bb61c8b984164447e000ae8a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d930276f2cddd0b7294cac7a8fe7b877f6d9e08d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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