cve-2022-48890
Vulnerability from cvelistv5
Published
2024-08-21 06:10
Modified
2024-11-04 12:18
Severity ?
Summary
scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67ff3d0a49f3d445c3922e30a54e03c161da561ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/87c71e88f6a6619ffb1ff88f84dff48ef6d57adbPatch
Impacted products
Vendor Product Version
Linux Linux Version: 5.17
Show details on NVD website

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            "other": {
              "content": {
                "id": "CVE-2022-48890",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T16:04:25.311779Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-12T17:32:55.107Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/storvsc_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "87c71e88f6a6",
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              "version": "743b237c3a7b",
              "versionType": "git"
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/scsi/storvsc_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM\n\nstorvsc_queuecommand() maps the scatter/gather list using scsi_dma_map(),\nwhich in a confidential VM allocates swiotlb bounce buffers. If the I/O\nsubmission fails in storvsc_do_io(), the I/O is typically retried by higher\nlevel code, but the bounce buffer memory is never freed.  The mostly like\ncause of I/O submission failure is a full VMBus channel ring buffer, which\nis not uncommon under high I/O loads.  Eventually enough bounce buffer\nmemory leaks that the confidential VM can\u0027t do any I/O. The same problem\ncan arise in a non-confidential VM with kernel boot parameter\nswiotlb=force.\n\nFix this by doing scsi_dma_unmap() in the case of an I/O submission\nerror, which frees the bounce buffer memory."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T12:18:36.064Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/87c71e88f6a6619ffb1ff88f84dff48ef6d57adb"
        },
        {
          "url": "https://git.kernel.org/stable/c/67ff3d0a49f3d445c3922e30a54e03c161da561e"
        }
      ],
      "title": "scsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-48890",
    "datePublished": "2024-08-21T06:10:22.243Z",
    "dateReserved": "2024-08-21T06:06:23.290Z",
    "dateUpdated": "2024-11-04T12:18:36.064Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-48890\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-21T07:15:05.303\",\"lastModified\":\"2024-09-06T15:11:16.120\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: storvsc: Fix swiotlb bounce buffer leak in confidential VM\\n\\nstorvsc_queuecommand() maps the scatter/gather list using scsi_dma_map(),\\nwhich in a confidential VM allocates swiotlb bounce buffers. If the I/O\\nsubmission fails in storvsc_do_io(), the I/O is typically retried by higher\\nlevel code, but the bounce buffer memory is never freed.  The mostly like\\ncause of I/O submission failure is a full VMBus channel ring buffer, which\\nis not uncommon under high I/O loads.  Eventually enough bounce buffer\\nmemory leaks that the confidential VM can\u0027t do any I/O. The same problem\\ncan arise in a non-confidential VM with kernel boot parameter\\nswiotlb=force.\\n\\nFix this by doing scsi_dma_unmap() in the case of an I/O submission\\nerror, which frees the bounce buffer memory.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: scsi: storvsc: corrige la fuga del b\u00fafer de rebote swiotlb en una VM confidencial storvsc_queuecommand() asigna la lista de dispersi\u00f3n/recopilaci\u00f3n usando scsi_dma_map(), que en una VM confidencial asigna buffers de rebote swiotlb. Si el env\u00edo de E/S falla en storvsc_do_io(), la E/S normalmente se reintenta mediante c\u00f3digo de nivel superior, pero la memoria del b\u00fafer de rebote nunca se libera. La causa m\u00e1s com\u00fan de falla en el env\u00edo de E/S es un b\u00fafer de anillo de canal VMBus lleno, lo cual no es infrecuente bajo cargas de E/S elevadas. Con el tiempo, se pierden suficientes memorias del b\u00fafer de rebote como para que la m\u00e1quina virtual confidencial no pueda realizar ninguna E/S. El mismo problema puede surgir en una m\u00e1quina virtual no confidencial con el par\u00e1metro de arranque del kernel swiotlb=force. Solucione este problema haciendo scsi_dma_unmap() en el caso de un error de env\u00edo de E/S, lo que libera la memoria del b\u00fafer de rebote.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-401\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.17\",\"versionEndExcluding\":\"6.1.7\",\"matchCriteriaId\":\"96403C94-C711-476F-BE5F-C7510379207B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FF501633-2F44-4913-A8EE-B021929F49F6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"2BDA597B-CAC1-4DF0-86F0-42E142C654E9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.2:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"725C78C9-12CE-406F-ABE8-0813A01D66E8\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/67ff3d0a49f3d445c3922e30a54e03c161da561e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/87c71e88f6a6619ffb1ff88f84dff48ef6d57adb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}


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