« Volver al listado

CVE-2026-90405

Estado: RecibidaSin puntuar—

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

media: stm32: dcmi: fix some error handling bugs in probe()

There are a few issues here:

I also moved the call to dma_release_channel() after the call to dma_release_channel() so it mirrors the allocation code better.

Detalles técnicos trazas, registros y código del informe original
1) After we assign:
        chan = dma_request_chan(&pdev->dev, "tx");
   Then the error paths need to clean up before returning.  The first
   error path does a direct return.
2) The error paths check "dcmi->mdma_chan" but that is not assigned
   until later so it results in memory leaks.  Test "mdma_chan"
   instead.
3) The error handling calls dma_release_channel(dcmi->dma_chan) before
   "dcmi->dma_chan" has been assigned which leads to a NULL pointer
   dereference.  Use the "chan" variable instead.

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-2026-90405",
  "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": "bc901885fae0a0273288666609d143e960b6ad3a",
              "lessThan": "4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bc901885fae0a0273288666609d143e960b6ad3a",
              "lessThan": "f1d1ed39ced825615aeac61f0b6a322178756632",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/media/platform/st/stm32/stm32-dcmi.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.1"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/media/platform/st/stm32/stm32-dcmi.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:40.357",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4d030d7d1af95d24d3eb6e536a4f09b7bf9a8659",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f1d1ed39ced825615aeac61f0b6a322178756632",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: stm32: dcmi: fix some error handling bugs in probe()\n\nThere are a few issues here:\n\n1) After we assign:\n        chan = dma_request_chan(&pdev->dev, \"tx\");\n   Then the error paths need to clean up before returning.  The first\n   error path does a direct return.\n2) The error paths check \"dcmi->mdma_chan\" but that is not assigned\n   until later so it results in memory leaks.  Test \"mdma_chan\"\n   instead.\n3) The error handling calls dma_release_channel(dcmi->dma_chan) before\n   \"dcmi->dma_chan\" has been assigned which leads to a NULL pointer\n   dereference.  Use the \"chan\" variable instead.\n\nI also moved the call to dma_release_channel() after the call to\ndma_release_channel() so it mirrors the allocation code better."
    }
  ],
  "lastModified": "2026-09-17T17:17:40.357",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}