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CVE-2026-80790

Estado: RecibidaSin puntuar—

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

nvmet-fc: fix invalid free in LS IOD error path

nvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD array. If an rqstbuf allocation or response buffer DMA mapping fails, the unwind loop decrements iod past the start of the array. The final kfree(iod) therefore frees an address before the allocated object.

This can be reproduced with nvme-fcloop and failslab by setting fail-nth to 6 before creating a target port. KASAN reports:

Free the original allocation base stored in tgtport->iod instead. With this fix applied, the same sysfs write with fail-nth=6 returns -ENOMEM without any KASAN report.

Detalles técnicos trazas, registros y código del informe original
  BUG: KASAN: invalid-free in nvmet_fc_register_targetport
  Free of addr ffff88816cf8ff48 by task nvmet_fail_nth/9552

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)

Mostrar
{
  "id": "CVE-2026-80790",
  "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": [
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              "version": "c53432030d86429dc9fe5adc3d68cb9d1343b0b2",
              "lessThan": "b189c6e408896ccc23d2e76d7738847cdebf1532",
              "versionType": "git"
            },
            {
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              "lessThan": "449e9c4f8db84ad9d9bb288029b230bcf590faa2",
              "versionType": "git"
            },
            {
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              "lessThan": "1a8f007faefe8c226ec65896589f8d59b0a8d5a5",
              "versionType": "git"
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            {
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            {
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          "programFiles": [
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          ],
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        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
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              "version": "4.10"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.10",
              "versionType": "semver"
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            {
              "status": "unaffected",
              "version": "5.10.267",
              "versionType": "semver",
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            },
            {
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              "version": "5.15.218",
              "versionType": "semver",
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            },
            {
              "status": "unaffected",
              "version": "6.1.185",
              "versionType": "semver",
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            },
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            },
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              "version": "6.12.106",
              "versionType": "semver",
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            },
            {
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              "version": "6.18.47",
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            },
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              "version": "7.1.11",
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              "version": "7.2.1",
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            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/nvme/target/fc.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-04T16:18:05.167",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1a8f007faefe8c226ec65896589f8d59b0a8d5a5",
      "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/449e9c4f8db84ad9d9bb288029b230bcf590faa2",
      "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/b189c6e408896ccc23d2e76d7738847cdebf1532",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba98d6796d12258e837ece065d2ecb59d76ce4ff",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bb9489f0dce58da730d3479588d6710d7a2c1b45",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d094582cce9c08516d714e7436a8f3b9211dda90",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-fc: fix invalid free in LS IOD error path\n\nnvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD\narray. If an rqstbuf allocation or response buffer DMA mapping fails,\nthe unwind loop decrements iod past the start of the array. The final\nkfree(iod) therefore frees an address before the allocated object.\n\nThis can be reproduced with nvme-fcloop and failslab by setting\nfail-nth to 6 before creating a target port. KASAN reports:\n\n  BUG: KASAN: invalid-free in nvmet_fc_register_targetport\n  Free of addr ffff88816cf8ff48 by task nvmet_fail_nth/9552\n\nFree the original allocation base stored in tgtport->iod instead. With\nthis fix applied, the same sysfs write with fail-nth=6 returns -ENOMEM\nwithout any KASAN report."
    }
  ],
  "lastModified": "2026-09-04T16:18:05.167",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}