CVE-2026-52983 (GCVE-0-2026-52983)
Vulnerability from cvelistv5
Published
2026-06-24 16:28
Modified
2026-10-21 12:41
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: net: airoha: fix BQL imbalance in TX path Fix a possible BQL imbalance in airoha_dev_xmit(), where inflight packets are accounted only for the AIROHA_NUM_TX_RING netdev TX queues. The queue index is computed as: qid = skb_get_queue_mapping(skb) % ARRAY_SIZE(qdma->q_tx) txq = netdev_get_tx_queue(dev, qid); However, airoha_qdma_tx_napi_poll() accounts completions across all netdev TX queues (num_tx_queues), leading to inconsistent BQL accounting. Also reset all netdev TX queues in the ndo_stop callback.
References
Impacted products
Vendor Product Version
Linux Linux Version: ca24fcac1daaa5e8a667981d81986a3eb4b9fb04
Version: 1d304174106c93ce05f6088813ad7203b3eb381a
Version: 1d304174106c93ce05f6088813ad7203b3eb381a
Version: 1d304174106c93ce05f6088813ad7203b3eb381a
Version: 6.12.91   ≤
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/airoha/airoha_eth.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
            {
              "lessThan": "aaad53a55812acd2355c0e5478896381e78b0110",
              "status": "affected",
              "version": "1d304174106c93ce05f6088813ad7203b3eb381a",
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            },
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              "versionType": "git"
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              "status": "affected",
              "version": "1d304174106c93ce05f6088813ad7203b3eb381a",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.114",
              "status": "affected",
              "version": "6.12.91",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/airoha/airoha_eth.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": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.114",
                  "versionStartIncluding": "6.12.91",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: fix BQL imbalance in TX path\n\nFix a possible BQL imbalance in airoha_dev_xmit(), where inflight\npackets are accounted only for the AIROHA_NUM_TX_RING netdev TX\nqueues. The queue index is computed as:\n\n    qid = skb_get_queue_mapping(skb) % ARRAY_SIZE(qdma-\u003eq_tx)\n    txq = netdev_get_tx_queue(dev, qid);\n\nHowever, airoha_qdma_tx_napi_poll() accounts completions across all\nnetdev TX queues (num_tx_queues), leading to inconsistent BQL\naccounting.\n\nAlso reset all netdev TX queues in the ndo_stop callback."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The vulnerable path is the Airoha Ethernet transmit path, and in a reasonable router/gateway or server deployment remote unauthenticated traffic can be forwarded or elicit responses transmitted through the affected interface.\nAC:L - Once HTB offload/extra TX queues are present, packets mapped to those queues deterministically create mismatched BQL accounting and the TX completion path reaches dql_completed(); no race or hard-to-win condition is required.\nPR:N - The attacker does not need credentials to send or induce network traffic through the configured interface; CAP_NET_ADMIN is only needed to create the traffic-shaping setup and may already be present in the deployed system.\nUI:N - No victim interaction is required after the affected network interface and queue configuration are active.\nS:U - The impact remains within the Linux kernel/network device security authority and does not cross a VM, IOMMU, or other separate security boundary.\nC:N - The bug is a BQL accounting mismatch that triggers a BUG_ON in dql_completed, not a memory disclosure or memory corruption primitive.\nI:N - The investigated path does not provide arbitrary write, data modification, or control-flow corruption; it fails through a kernel assertion.\nA:H - The mismatched completion accounting can trigger a kernel BUG/oops in the TX completion path, causing a system crash or denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:41:43.028Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fcd6a3bb48bb661876c2743e89f0a6567f5cea2c"
        },
        {
          "url": "https://git.kernel.org/stable/c/aaad53a55812acd2355c0e5478896381e78b0110"
        },
        {
          "url": "https://git.kernel.org/stable/c/ded2694247a55a16d0ebbe2d6f9139305c21457a"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d9f5a118205da2683ffcec78b9347f1f01a820e"
        }
      ],
      "title": "net: airoha: fix BQL imbalance in TX path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-52983",
    "datePublished": "2026-06-24T16:28:58.437Z",
    "dateReserved": "2026-06-09T07:44:35.376Z",
    "dateUpdated": "2026-10-21T12:41:43.028Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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