CVE-2026-64019 (GCVE-0-2026-64019)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-07-19 15:39
VLAI
Title
nvme-pci: fix dma mapping leak on data setup error
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2 , < e50db059ec8e63bc50b1cc039e2502cb5ea75a70 (git)
Affected: 7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2 , < 1bf86336e4b6cf40873fda47a7fe191446864937 (git)
Create a notification for this product.
Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "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": "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": "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": "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": "2026-07-19T15:39:13.400Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "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": "2026-07-19T15:39:13.400Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-64019",
      "date": "2026-07-21",
      "epss": "0.00155",
      "percentile": "0.05137"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-64019\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-07-19T16:17:41.907\",\"lastModified\":\"2026-07-19T16:17:41.907\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/nvme/host/pci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2\",\"lessThan\":\"e50db059ec8e63bc50b1cc039e2502cb5ea75a70\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"7ce3c1dd78fca86ea8b9aee370db10c7a8cfc3c2\",\"lessThan\":\"1bf86336e4b6cf40873fda47a7fe191446864937\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/nvme/host/pci.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.17\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.17\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0.11\",\"lessThanOrEqual\":\"7.0.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1bf86336e4b6cf40873fda47a7fe191446864937\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e50db059ec8e63bc50b1cc039e2502cb5ea75a70\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-21T13:36:47+00:00",
      "cve": "CVE-2026-64019",
      "id": "CVE-2026-64019",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: nvme-pci: fix dma mapping leak on data setup error",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64019.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.