CVE-2022-49858 (GCVE-0-2022-49858)
Vulnerability from cvelistv5
Published
2025-05-01 14:10
Modified
2025-05-04 08:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: Fix SQE threshold checking Current way of checking available SQE count which is based on HW updated SQB count could result in driver submitting an SQE even before CQE for the previously transmitted SQE at the same index is processed in NAPI resulting losing SKB pointers, hence a leak. Fix this by checking a consumer index which is updated once CQE is processed.
References
Impacted products
Vendor Product Version
Linux Linux Version: 3ca6c4c882a7f34085b170d93cf0d0e843aa00e6
Version: 3ca6c4c882a7f34085b170d93cf0d0e843aa00e6
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "015e3c0a3b16193aab23beefe4719484b9984c2d",
              "status": "affected",
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              "versionType": "git"
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              "versionType": "git"
            }
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        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.c",
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
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              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0.9",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
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                  "versionEndExcluding": "6.1",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: Fix SQE threshold checking\n\nCurrent way of checking available SQE count which is based on\nHW updated SQB count could result in driver submitting an SQE\neven before CQE for the previously transmitted SQE at the same\nindex is processed in NAPI resulting losing SKB pointers,\nhence a leak. Fix this by checking a consumer index which\nis updated once CQE is processed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:47:02.160Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/015e3c0a3b16193aab23beefe4719484b9984c2d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0dfc4c88ef39be0ba736aa0ce6119263fc19aeb"
        }
      ],
      "title": "octeontx2-pf: Fix SQE threshold checking",
      "x_generator": {
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49858",
    "datePublished": "2025-05-01T14:10:11.559Z",
    "dateReserved": "2025-05-01T14:05:17.235Z",
    "dateUpdated": "2025-05-04T08:47:02.160Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49858\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:09.410\",\"lastModified\":\"2025-05-02T13:52:51.693\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nocteontx2-pf: Fix SQE threshold checking\\n\\nCurrent way of checking available SQE count which is based on\\nHW updated SQB count could result in driver submitting an SQE\\neven before CQE for the previously transmitted SQE at the same\\nindex is processed in NAPI resulting losing SKB pointers,\\nhence a leak. Fix this by checking a consumer index which\\nis updated once CQE is processed.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: octeontx2-pf: Se corrige la comprobaci\u00f3n del umbral de SQE. La forma actual de comprobar el recuento de SQE disponibles, basada en el recuento de SQB actualizado por hardware, podr\u00eda provocar que el controlador env\u00ede un SQE incluso antes de que se procese en NAPI el CQE del SQE previamente transmitido en el mismo \u00edndice, lo que resulta en la p\u00e9rdida de punteros SKB y, por lo tanto, una fuga. Se soluciona esto comprobando un \u00edndice de consumidor que se actualiza una vez procesado el CQE.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/015e3c0a3b16193aab23beefe4719484b9984c2d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f0dfc4c88ef39be0ba736aa0ce6119263fc19aeb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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