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CVE-2026-72023

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

octeontx2-pf: fix SQB pointer leak on init failure

otx2_init_hw_resources() initializes SQ aura and pool resources before several later setup steps. On failure, err_free_sq_ptrs only frees SQB pages, leaving the per-SQ sqb_ptrs arrays behind.

Use otx2_free_sq_res() for the SQ unwind path and let it free sqb_ptrs even when sq->sqe has not been allocated yet.

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 v7.1.1.

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An x86_64 allyesconfig build showed no new warnings. As we do not have an OcteonTX2 PF device and the corresponding AF mailbox setup 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-2026-72023",
  "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": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
              "lessThan": "fca9c22633169a6c5d429a32e439121b6419e2be",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
              "lessThan": "42c2836f10ac0427dac9e9a923d6ee2189dec544",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
              "lessThan": "2cac2eac935ed7e0a9203204e036a1f6090ebc3d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
              "lessThan": "148d7ec0a3a98839c320e6cdd112e2e88bfb091b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
              "lessThan": "5e023fe2569e630ba23b5558ebe4bf4837af4d16",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
              "lessThan": "5df30f05db96552903680a17f858d250dfd9e86e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "caa2da34fd25a37e9fd43343b6966fb9d730a6d5",
              "lessThan": "23d917acd9c9a9fd999688ec3fdde7aa58ab8a14",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "62e7df6d042aeebd5efb581074e28865c04477be",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.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": "5.10.266",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.217",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.184",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.101",
              "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/marvell/octeontx2/nic/otx2_pf.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:01.323",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/148d7ec0a3a98839c320e6cdd112e2e88bfb091b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/23d917acd9c9a9fd999688ec3fdde7aa58ab8a14",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2cac2eac935ed7e0a9203204e036a1f6090ebc3d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/42c2836f10ac0427dac9e9a923d6ee2189dec544",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5df30f05db96552903680a17f858d250dfd9e86e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5e023fe2569e630ba23b5558ebe4bf4837af4d16",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/62e7df6d042aeebd5efb581074e28865c04477be",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fca9c22633169a6c5d429a32e439121b6419e2be",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteontx2-pf: fix SQB pointer leak on init failure\n\notx2_init_hw_resources() initializes SQ aura and pool resources before\nseveral later setup steps. On failure, err_free_sq_ptrs only frees SQB\npages, leaving the per-SQ sqb_ptrs arrays behind.\n\nUse otx2_free_sq_res() for the SQ unwind path and let it free sqb_ptrs\neven when sq->sqe has not been allocated yet.\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 v7.1.1.\n\nAn x86_64 allyesconfig build showed no new warnings. As we do not have an\nOcteonTX2 PF device and the corresponding AF mailbox setup to test with,\nno runtime testing was able to be performed."
    }
  ],
  "lastModified": "2026-08-23T13:16:37.467",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}