FKIE_CVE-2026-97572

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-09-25 11:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Propagate RX ring init failures in bnxt_init_nic() bnxt_init_rx_rings() returns an error when bnxt_alloc_one_rx_ring() fails, but bnxt_init_nic() discards that return value and calls bnxt_init_chip(), which enables TPA. If an allocation fails, this could leave rxr->rx_tpa[] partially zeroed and TPA would be enabled over an array with zeroed entries. This would lead to a zeroed DMA address being handed out if the agg_idx is translated to a SW index at a zeroed entry. Fix this by propagating the error out of bnxt_init_nic(). Both callers already check its return value and unwind with bnxt_free_skbs() and bnxt_free_mem(), which tolerate a partially initialized RX ring.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e6a850c0746bb4be167aedf1ee57469fcda09a9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4c40f2c80d7bf50648878bc206a39adfbfaec6c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/daadccd062fdca5e77a8cc22ffe35857803b6c49
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfd73af81cdb9f7b399754a59e2658a08211bee5
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "daadccd062fdca5e77a8cc22ffe35857803b6c49",
              "status": "affected",
              "version": "c0c050c58d840994ba842ad1c338a98e7c12b764",
              "versionType": "git"
            },
            {
              "lessThan": "b4c40f2c80d7bf50648878bc206a39adfbfaec6c",
              "status": "affected",
              "version": "c0c050c58d840994ba842ad1c338a98e7c12b764",
              "versionType": "git"
            },
            {
              "lessThan": "dfd73af81cdb9f7b399754a59e2658a08211bee5",
              "status": "affected",
              "version": "c0c050c58d840994ba842ad1c338a98e7c12b764",
              "versionType": "git"
            },
            {
              "lessThan": "8e6a850c0746bb4be167aedf1ee57469fcda09a9",
              "status": "affected",
              "version": "c0c050c58d840994ba842ad1c338a98e7c12b764",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnxt/bnxt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.4"
            },
            {
              "lessThan": "4.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Propagate RX ring init failures in bnxt_init_nic()\n\nbnxt_init_rx_rings() returns an error when bnxt_alloc_one_rx_ring()\nfails, but bnxt_init_nic() discards that return value and calls\nbnxt_init_chip(), which enables TPA.\n\nIf an allocation fails, this could leave rxr-\u003erx_tpa[] partially zeroed\nand TPA would be enabled over an array with zeroed entries. This would\nlead to a zeroed DMA address being handed out if the agg_idx is\ntranslated to a SW index at a zeroed entry.\n\nFix this by propagating the error out of bnxt_init_nic(). Both callers\nalready check its return value and unwind with bnxt_free_skbs() and\nbnxt_free_mem(), which tolerate a partially initialized RX ring."
    }
  ],
  "id": "CVE-2026-97572",
  "lastModified": "2026-09-25T11:17:07.910",
  "metrics": {},
  "published": "2026-09-25T11:17:07.910",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8e6a850c0746bb4be167aedf1ee57469fcda09a9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b4c40f2c80d7bf50648878bc206a39adfbfaec6c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/daadccd062fdca5e77a8cc22ffe35857803b6c49"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dfd73af81cdb9f7b399754a59e2658a08211bee5"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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