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bnxt_en: Fix NULL pointer dereference

Type: advisorySource: Official CVE List1 source record

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.

Announced Group revision 1
Original source ↗

CVE-2026-53177

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-53177

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "1449177b87f768353909e930a99b902675119b2b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "964b1c3eb71afe58bb61c8b984164447e000ae8a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "59c5a3e69c7630a811565937e64be70b08436761",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "1a418ad0e5e525d1d117dd1601681f75455af320",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "08e57d014ea19f303d5d57a849beb846f37788b7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "3884976f87448e269908ae61bd5d62d54ce9c0c7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "580844a9683afe7974856dd5b7886447435b3474",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e5811b8c09df9bc80eabc95339fceded23f16289",
        "lessThan": "d930276f2cddd0b7294cac7a8fe7b877f6d9e08d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/broadcom/bnxt/bnxt.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.17"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.17",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.260",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.210",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.176",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.143",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.94",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.36",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.13",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/ethernet/broadcom/bnxt/bnxt.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53177

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28433 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. CVE-2026-53177 · Revision 1Source updated