CVE-2026-53177 (GCVE-0-2026-53177)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:38 – Updated: 2026-06-25 08:38
VLAI
Title
bnxt_en: Fix NULL pointer dereference
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e5811b8c09df9bc80eabc95339fceded23f16289 , < 964b1c3eb71afe58bb61c8b984164447e000ae8a (git)
Affected: e5811b8c09df9bc80eabc95339fceded23f16289 , < 59c5a3e69c7630a811565937e64be70b08436761 (git)
Affected: e5811b8c09df9bc80eabc95339fceded23f16289 , < 1a418ad0e5e525d1d117dd1601681f75455af320 (git)
Affected: e5811b8c09df9bc80eabc95339fceded23f16289 , < 08e57d014ea19f303d5d57a849beb846f37788b7 (git)
Affected: e5811b8c09df9bc80eabc95339fceded23f16289 , < 3884976f87448e269908ae61bd5d62d54ce9c0c7 (git)
Affected: e5811b8c09df9bc80eabc95339fceded23f16289 , < 580844a9683afe7974856dd5b7886447435b3474 (git)
Affected: e5811b8c09df9bc80eabc95339fceded23f16289 , < d930276f2cddd0b7294cac7a8fe7b877f6d9e08d (git)
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Linux Linux Affected: 4.17
Unaffected: 0 , < 4.17 (semver)
Unaffected: 5.15.210 , ≤ 5.15.* (semver)
Unaffected: 6.1.176 , ≤ 6.1.* (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c"
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          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:38:53.347Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/964b1c3eb71afe58bb61c8b984164447e000ae8a"
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          "url": "https://git.kernel.org/stable/c/d930276f2cddd0b7294cac7a8fe7b877f6d9e08d"
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    "cveId": "CVE-2026-53177",
    "datePublished": "2026-06-25T08:38:53.347Z",
    "dateReserved": "2026-06-09T07:44:35.389Z",
    "dateUpdated": "2026-06-25T08:38:53.347Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
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      "date": "2026-07-01",
      "epss": "0.00172",
      "percentile": "0.06897"
    },
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.