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CVE-2026-72056

Estado: RecibidaSin puntuar—

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.

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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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-72056",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "lessThan": "df65d9fea8437235e740552e542fb309765507db",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "lessThan": "5daa63404b708fc74e94da8398affbb148d09044",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "lessThan": "523caef03124ecc08ce62a78c617759c2d28cf1c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
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              "versionType": "git"
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            {
              "status": "affected",
              "version": "548c4940b9f1f527f81509468dd60b61418880b6",
              "lessThan": "6773d6d82bdabddab2b31605d6d7029c91dbd217",
              "versionType": "git"
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            {
              "status": "affected",
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            {
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            }
          ],
          "programFiles": [
            "drivers/net/ethernet/amazon/ena/ena_netdev.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/amazon/ena/ena_netdev.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:15.010",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/11f68ebc6891d11de5f32b7dee918c5dc18b8de1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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    {
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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    {
      "url": "https://git.kernel.org/stable/c/5daa63404b708fc74e94da8398affbb148d09044",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "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"
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    {
      "url": "https://git.kernel.org/stable/c/df65d9fea8437235e740552e542fb309765507db",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f2ff634d95f8a6c885b9ce71a64067e255bcc34a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "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."
    }
  ],
  "lastModified": "2026-08-17T06:18:03.897",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}