CVE-2026-64019 (GCVE-0-2026-64019)
Vulnerability from cvelistv5
Published
2026-07-19 15:39
Modified
2026-10-15 10:07
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix dma mapping leak on data setup error We're leaking the initial DMA mapping during iteration if we fail to allocate the tracking descriptor for both PRP and SGL. Unmap the iterator directly; we can't use the existing unmap helper because it depends on the tracking descriptor being successfully allocated, so a new one for an in-use iterator is provided. The mappings were also leaking when the driver detects an invalid bio_vec when mapping PRPs, so fix that too.
References
Impacted products
Vendor Product Version
Linux Linux Version: 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2
Version: 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2
Version: 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fba32257979dda14b0d8ed7402490ae0be44972a",
              "status": "affected",
              "version": "7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2",
              "versionType": "git"
            },
            {
              "lessThan": "e50db059ec8e63bc50b1cc039e2502cb5ea75a70",
              "status": "affected",
              "version": "7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2",
              "versionType": "git"
            },
            {
              "lessThan": "1bf86336e4b6cf40873fda47a7fe191446864937",
              "status": "affected",
              "version": "7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/pci.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.57",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "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": "6.18.57",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-pci: fix dma mapping leak on data setup error\n\nWe\u0027re leaking the initial DMA mapping during iteration if we fail to\nallocate the tracking descriptor for both PRP and SGL. Unmap the\niterator directly; we can\u0027t use the existing unmap helper because it\ndepends on the tracking descriptor being successfully allocated, so a\nnew one for an in-use iterator is provided.\n\nThe mappings were also leaking when the driver detects an invalid\nbio_vec when mapping PRPs, so fix that too."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T10:07:56.071Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/fba32257979dda14b0d8ed7402490ae0be44972a"
        },
        {
          "url": "https://git.kernel.org/stable/c/e50db059ec8e63bc50b1cc039e2502cb5ea75a70"
        },
        {
          "url": "https://git.kernel.org/stable/c/1bf86336e4b6cf40873fda47a7fe191446864937"
        }
      ],
      "title": "nvme-pci: fix dma mapping leak on data setup error",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64019",
    "datePublished": "2026-07-19T15:39:13.400Z",
    "dateReserved": "2026-07-19T07:54:57.027Z",
    "dateUpdated": "2026-10-15T10:07:56.071Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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