CVE-2026-97571 (GCVE-0-2026-97571)
Vulnerability from cvelistv5
Published
2026-09-25 10:21
Modified
2026-10-19 09:09
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Propagate TPA buffer allocation failures in bnxt_queue_mem_alloc() bnxt_alloc_one_tpa_info_data() returns -ENOMEM as soon as one allocation fails. This leaves the remaining rxr->rx_tpa[] entries zeroed. bnxt_queue_mem_alloc() discards that return value, so the partially initialized ring is installed by bnxt_queue_start(). Since the agg_id is picked by the hardware and bnxt_alloc_agg_idx maps it to a SW index in rxr->rx_tpa[], it is possible that an uninitialized slot can be chosen which would hand a zero DMA address to the device. Fix this by checking the return value of bnxt_alloc_one_tpa_info_data and unwinding, freeing the ring buffers.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0997443906b96a051011f220a61e6dce4602ec54
Version: bd649c5cc958169b8a8a3e77ea926d92d472b02a
Version: bd649c5cc958169b8a8a3e77ea926d92d472b02a
Version: bd649c5cc958169b8a8a3e77ea926d92d472b02a
Version: 6.12.20   ≤
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": "d7db2e4953e4626339fd0075564a3e447650d37b",
              "status": "affected",
              "version": "0997443906b96a051011f220a61e6dce4602ec54",
              "versionType": "git"
            },
            {
              "lessThan": "c8050386a2209b2a474c1eb4bd1574dc19129bfb",
              "status": "affected",
              "version": "bd649c5cc958169b8a8a3e77ea926d92d472b02a",
              "versionType": "git"
            },
            {
              "lessThan": "37e08dc821a57fe0592c917486b638caa888b46d",
              "status": "affected",
              "version": "bd649c5cc958169b8a8a3e77ea926d92d472b02a",
              "versionType": "git"
            },
            {
              "lessThan": "b814dfbfeb0a68c9a52073f2caa05a2d5247a329",
              "status": "affected",
              "version": "bd649c5cc958169b8a8a3e77ea926d92d472b02a",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.112",
              "status": "affected",
              "version": "6.12.20",
              "versionType": "semver"
            }
          ]
        },
        {
          "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": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "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",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "6.12.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Propagate TPA buffer allocation failures in bnxt_queue_mem_alloc()\n\nbnxt_alloc_one_tpa_info_data() returns -ENOMEM as soon as one allocation\nfails. This leaves the remaining rxr-\u003erx_tpa[] entries zeroed.\n\nbnxt_queue_mem_alloc() discards that return value, so the partially\ninitialized ring is installed by bnxt_queue_start().\n\nSince the agg_id is picked by the hardware and bnxt_alloc_agg_idx maps\nit to a SW index in rxr-\u003erx_tpa[], it is possible that an uninitialized\nslot can be chosen which would hand a zero DMA address to the device.\n\nFix this by checking the return value of bnxt_alloc_one_tpa_info_data\nand unwinding, freeing the ring buffers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:09:33.921Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d7db2e4953e4626339fd0075564a3e447650d37b"
        },
        {
          "url": "https://git.kernel.org/stable/c/c8050386a2209b2a474c1eb4bd1574dc19129bfb"
        },
        {
          "url": "https://git.kernel.org/stable/c/37e08dc821a57fe0592c917486b638caa888b46d"
        },
        {
          "url": "https://git.kernel.org/stable/c/b814dfbfeb0a68c9a52073f2caa05a2d5247a329"
        }
      ],
      "title": "bnxt_en: Propagate TPA buffer allocation failures in bnxt_queue_mem_alloc()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97571",
    "datePublished": "2026-09-25T10:21:56.208Z",
    "dateReserved": "2026-09-24T16:01:01.155Z",
    "dateUpdated": "2026-10-19T09:09:33.921Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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