CVE-2026-98486 (GCVE-0-2026-98486)
Vulnerability from cvelistv5
Published
2026-10-18 15:16
Modified
2026-10-30 12:38
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ena: fix MMIO read buffer leak on probe failure ena_device_init() initializes the MMIO read mechanism with ena_com_mmio_reg_read_request_init(), which allocates a coherent DMA buffer for MMIO read responses. The normal removal path releases this buffer through ena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails after ena_device_init() succeeds, the error path destroys the admin resources and eventually frees ena_dev without destroying the MMIO read request, leaving the coherent DMA buffer allocated. Call ena_com_mmio_reg_read_request_destroy() in the probe error path before releasing the remaining device resources. This issue was found by manual code inspection.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1738cd3ed342294360d6a74d4e58800004bff854
Version: 1738cd3ed342294360d6a74d4e58800004bff854
Version: 1738cd3ed342294360d6a74d4e58800004bff854
Version: 1738cd3ed342294360d6a74d4e58800004bff854
Version: 1738cd3ed342294360d6a74d4e58800004bff854
Version: 1738cd3ed342294360d6a74d4e58800004bff854
Version: 1738cd3ed342294360d6a74d4e58800004bff854
Version: 1738cd3ed342294360d6a74d4e58800004bff854
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amazon/ena/ena_netdev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9de940a3c5731be5a544f6f366576cc4dc073f7c",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            },
            {
              "lessThan": "4b90112826439149dcee20e73d02f25ae0e2a9fb",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            },
            {
              "lessThan": "0d31edc7ff1f7f265c11248819dfaf5a8274b209",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            },
            {
              "lessThan": "a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            },
            {
              "lessThan": "7bd3e9a2d0c288e54f51df260d9433163f5fbc1e",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            },
            {
              "lessThan": "30ff01b4c7e419bb70f40f01dcd7f6af680808b3",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            },
            {
              "lessThan": "47785f9f638b064ce6e32e8e3b6f1ffd83849fc2",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            },
            {
              "lessThan": "9476b4468862927297c94c440863cd8ed1e7cc83",
              "status": "affected",
              "version": "1738cd3ed342294360d6a74d4e58800004bff854",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/amazon/ena/ena_netdev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "lessThan": "4.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.273",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.224",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.273",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.224",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.191",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.55",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.9",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "4.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ena: fix MMIO read buffer leak on probe failure\n\nena_device_init() initializes the MMIO read mechanism with\nena_com_mmio_reg_read_request_init(), which allocates a coherent DMA\nbuffer for MMIO read responses.\n\nThe normal removal path releases this buffer through\nena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails\nafter ena_device_init() succeeds, the error path destroys the admin\nresources and eventually frees ena_dev without destroying the MMIO read\nrequest, leaving the coherent DMA buffer allocated.\n\nCall ena_com_mmio_reg_read_request_destroy() in the probe error path\nbefore releasing the remaining device resources.\n\nThis issue was found by manual code inspection."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:38:16.404Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9de940a3c5731be5a544f6f366576cc4dc073f7c"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b90112826439149dcee20e73d02f25ae0e2a9fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/0d31edc7ff1f7f265c11248819dfaf5a8274b209"
        },
        {
          "url": "https://git.kernel.org/stable/c/a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c"
        },
        {
          "url": "https://git.kernel.org/stable/c/7bd3e9a2d0c288e54f51df260d9433163f5fbc1e"
        },
        {
          "url": "https://git.kernel.org/stable/c/30ff01b4c7e419bb70f40f01dcd7f6af680808b3"
        },
        {
          "url": "https://git.kernel.org/stable/c/47785f9f638b064ce6e32e8e3b6f1ffd83849fc2"
        },
        {
          "url": "https://git.kernel.org/stable/c/9476b4468862927297c94c440863cd8ed1e7cc83"
        }
      ],
      "title": "net: ena: fix MMIO read buffer leak on probe failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98486",
    "datePublished": "2026-10-18T15:16:03.002Z",
    "dateReserved": "2026-09-25T10:25:14.352Z",
    "dateUpdated": "2026-10-30T12:38:16.404Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.