Vulnerability-Lookup

FKIE_CVE-2026-72056

Vulnerability from fkie_nvd - Published: 2026-08-15 06:21 - Updated: 2026-08-17 06:18

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

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/11f68ebc6891d11de5f32b7dee918c5dc18b8de1
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/1bd6676254b4ab6acd44b662b5e92822c036463a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/523caef03124ecc08ce62a78c617759c2d28cf1c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5daa63404b708fc74e94da8398affbb148d09044
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6596baf8041100a9d1647beb5ea8ea4496ce058f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6773d6d82bdabddab2b31605d6d7029c91dbd217
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/df65d9fea8437235e740552e542fb309765507db
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f2ff634d95f8a6c885b9ce71a64067e255bcc34a

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-72056",
  "lastModified": "2026-08-17T06:18:03.897",
  "metrics": {},
  "published": "2026-08-15T06:21:15.010",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/11f68ebc6891d11de5f32b7dee918c5dc18b8de1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1bd6676254b4ab6acd44b662b5e92822c036463a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/523caef03124ecc08ce62a78c617759c2d28cf1c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5daa63404b708fc74e94da8398affbb148d09044"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6596baf8041100a9d1647beb5ea8ea4496ce058f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6773d6d82bdabddab2b31605d6d7029c91dbd217"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df65d9fea8437235e740552e542fb309765507db"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f2ff634d95f8a6c885b9ce71a64067e255bcc34a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-72056 (GCVE-0-2026-72056)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:52 – Updated: 2026-08-17 05:07

Title

net: ena: clean up XDP TX queues when regular TX setup fails

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/df65d9fea8437235e…
https://git.kernel.org/stable/c/5daa63404b708fc74…
https://git.kernel.org/stable/c/523caef03124ecc08…
https://git.kernel.org/stable/c/f2ff634d95f8a6c88…
https://git.kernel.org/stable/c/6773d6d82bdabddab…
https://git.kernel.org/stable/c/6596baf8041100a9d…
https://git.kernel.org/stable/c/11f68ebc6891d11de…
https://git.kernel.org/stable/c/1bd6676254b4ab6ac…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < df65d9fea8437235e740552e542fb309765507db (git) Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < 5daa63404b708fc74e94da8398affbb148d09044 (git) Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < 523caef03124ecc08ce62a78c617759c2d28cf1c (git) Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < f2ff634d95f8a6c885b9ce71a64067e255bcc34a (git) Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < 6773d6d82bdabddab2b31605d6d7029c91dbd217 (git) Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < 6596baf8041100a9d1647beb5ea8ea4496ce058f (git) Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < 11f68ebc6891d11de5f32b7dee918c5dc18b8de1 (git) Affected: 548c4940b9f1f527f81509468dd60b61418880b6 , < 1bd6676254b4ab6acd44b662b5e92822c036463a (git)
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

FKIE_CVE-2026-72056

CVE-2026-72056 (GCVE-0-2026-72056)

Tags

Sightings

Nomenclature