{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cxl/core/pmem.c",
            "drivers/cxl/cxl.h",
            "drivers/cxl/pmem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "lessThan": "f43b6bfdbab78606735ba81185cf0602b81e40b6",
              "status": "affected",
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          "defaultStatus": "affected",
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            "drivers/cxl/pmem.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
              "version": "6.0"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                  "vulnerable": true
                },
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              ],
              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncxl/pmem: Fix cxl_pmem_region and cxl_memdev leak\n\nWhen a cxl_nvdimm object goes through a -\u003eremove() event (device\nphysically removed, nvdimm-bridge disabled, or nvdimm device disabled),\nthen any associated regions must also be disabled. As highlighted by the\ncxl-create-region.sh test [1], a single device may host multiple\nregions, but the driver was only tracking one region at a time. This\nleads to a situation where only the last enabled region per nvdimm\ndevice is cleaned up properly. Other regions are leaked, and this also\ncauses cxl_memdev reference leaks.\n\nFix the tracking by allowing cxl_nvdimm objects to track multiple region\nassociations."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:48:00.724Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f43b6bfdbab78606735ba81185cf0602b81e40b6"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d07ae22e79ebc2d7528bbc69daa53b86981cb3a"
        }
      ],
      "title": "cxl/pmem: Fix cxl_pmem_region and cxl_memdev leak",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49896",
    "datePublished": "2025-05-01T14:10:38.336Z",
    "dateReserved": "2025-05-01T14:05:17.244Z",
    "dateUpdated": "2025-05-04T08:48:00.724Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49896\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-01T15:16:14.643\",\"lastModified\":\"2025-05-07T13:19:15.073\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncxl/pmem: Fix cxl_pmem_region and cxl_memdev leak\\n\\nWhen a cxl_nvdimm object goes through a -\u003eremove() event (device\\nphysically removed, nvdimm-bridge disabled, or nvdimm device disabled),\\nthen any associated regions must also be disabled. As highlighted by the\\ncxl-create-region.sh test [1], a single device may host multiple\\nregions, but the driver was only tracking one region at a time. This\\nleads to a situation where only the last enabled region per nvdimm\\ndevice is cleaned up properly. Other regions are leaked, and this also\\ncauses cxl_memdev reference leaks.\\n\\nFix the tracking by allowing cxl_nvdimm objects to track multiple region\\nassociations.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cxl/pmem: Arregla la fuga de cxl_pmem_region y cxl_memdev Cuando un objeto cxl_nvdimm pasa por un evento -\u0026gt;remove() (dispositivo eliminado f\u00edsicamente, nvdimm-bridge deshabilitado o dispositivo nvdimm deshabilitado), entonces cualquier regi\u00f3n asociada tambi\u00e9n debe deshabilitarse. Como se destaca en la prueba cxl-create-region.sh [1], un solo dispositivo puede albergar m\u00faltiples regiones, pero el controlador solo rastreaba una regi\u00f3n a la vez. Esto lleva a una situaci\u00f3n en la que solo la \u00faltima regi\u00f3n habilitada por dispositivo nvdimm se limpia correctamente. Se filtran otras regiones, y esto tambi\u00e9n causa fugas de referencia de cxl_memdev. Arregla el rastreo permitiendo que los objetos cxl_nvdimm rastreen m\u00faltiples asociaciones de regiones.\"}],\"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\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.0\",\"versionEndExcluding\":\"6.0.8\",\"matchCriteriaId\":\"2AE8E086-9C21-4A47-A505-C5DBF09AAA5A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E7E331DA-1FB0-4DEC-91AC-7DA69D461C11\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"17F0B248-42CF-4AE6-A469-BB1BAE7F4705\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E2422816-0C14-4B5E-A1E6-A9D776E5C49B\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4d07ae22e79ebc2d7528bbc69daa53b86981cb3a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f43b6bfdbab78606735ba81185cf0602b81e40b6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}"
  }
}