CVE-2026-72056 (GCVE-0-2026-72056)
Vulnerability from cvelistv5
Published
2026-08-15 05:52
Modified
2026-08-17 05:07
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ena: clean up XDP TX queues when regular TX setup fails create_queues_with_size_backoff() creates XDP TX queues before setting up the regular TX path. If the subsequent allocation or creation of regular TX queues fails, the error handling paths omit the teardown of the XDP TX queues, leading to a resource leak. Fix this by explicitly destroying the XDP TX queue subset at the two missing failure points. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc7. An x86_64 allyesconfig build showed no new warnings. As we do not have an ENA device to test with, no runtime testing was able to be performed.
References
Impacted products
Vendor Product Version
Linux Linux Version: 548c4940b9f1f527f81509468dd60b61418880b6
Version: 548c4940b9f1f527f81509468dd60b61418880b6
Version: 548c4940b9f1f527f81509468dd60b61418880b6
Version: 548c4940b9f1f527f81509468dd60b61418880b6
Version: 548c4940b9f1f527f81509468dd60b61418880b6
Version: 548c4940b9f1f527f81509468dd60b61418880b6
Version: 548c4940b9f1f527f81509468dd60b61418880b6
Version: 548c4940b9f1f527f81509468dd60b61418880b6
 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": "df65d9fea8437235e740552e542fb309765507db",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "versionType": "git"
            },
            {
              "lessThan": "5daa63404b708fc74e94da8398affbb148d09044",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "versionType": "git"
            },
            {
              "lessThan": "523caef03124ecc08ce62a78c617759c2d28cf1c",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "versionType": "git"
            },
            {
              "lessThan": "f2ff634d95f8a6c885b9ce71a64067e255bcc34a",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "versionType": "git"
            },
            {
              "lessThan": "6773d6d82bdabddab2b31605d6d7029c91dbd217",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "versionType": "git"
            },
            {
              "lessThan": "6596baf8041100a9d1647beb5ea8ea4496ce058f",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "versionType": "git"
            },
            {
              "lessThan": "11f68ebc6891d11de5f32b7dee918c5dc18b8de1",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "versionType": "git"
            },
            {
              "lessThan": "1bd6676254b4ab6acd44b662b5e92822c036463a",
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "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": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.261",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.178",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.145",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.5",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ena: clean up XDP TX queues when regular TX setup fails\n\ncreate_queues_with_size_backoff() creates XDP TX queues before setting\nup the regular TX path. If the subsequent allocation or creation of\nregular TX queues fails, the error handling paths omit the teardown of the\nXDP TX queues, leading to a resource leak.\n\nFix this by explicitly destroying the XDP TX queue subset at the two\nmissing failure points.\n\nThe bug was first flagged by an experimental analysis tool we are\ndeveloping for kernel memory-management bugs while analyzing\nv6.13-rc1. The tool is still under development and is not yet publicly\navailable. Manual inspection confirms that the bug is still\npresent in v7.1-rc7.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have\nan ENA device to test with, no runtime testing was able to be performed."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:07:22.862Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/df65d9fea8437235e740552e542fb309765507db"
        },
        {
          "url": "https://git.kernel.org/stable/c/5daa63404b708fc74e94da8398affbb148d09044"
        },
        {
          "url": "https://git.kernel.org/stable/c/523caef03124ecc08ce62a78c617759c2d28cf1c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f2ff634d95f8a6c885b9ce71a64067e255bcc34a"
        },
        {
          "url": "https://git.kernel.org/stable/c/6773d6d82bdabddab2b31605d6d7029c91dbd217"
        },
        {
          "url": "https://git.kernel.org/stable/c/6596baf8041100a9d1647beb5ea8ea4496ce058f"
        },
        {
          "url": "https://git.kernel.org/stable/c/11f68ebc6891d11de5f32b7dee918c5dc18b8de1"
        },
        {
          "url": "https://git.kernel.org/stable/c/1bd6676254b4ab6acd44b662b5e92822c036463a"
        }
      ],
      "title": "net: ena: clean up XDP TX queues when regular TX setup fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72056",
    "datePublished": "2026-08-15T05:52:12.136Z",
    "dateReserved": "2026-08-09T03:40:39.903Z",
    "dateUpdated": "2026-08-17T05:07:22.862Z",
    "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.