{
  "id": "CVE-2022-49569",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-02-26T07:01:32.607",
  "lastModified": "2025-03-10T21:11:35.827",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: bcm2835: bcm2835_spi_handle_err(): fix NULL pointer deref for non DMA transfers\n\nIn case a IRQ based transfer times out the bcm2835_spi_handle_err()\nfunction is called. Since commit 1513ceee70f2 (\"spi: bcm2835: Drop\ndma_pending flag\") the TX and RX DMA transfers are unconditionally\ncanceled, leading to NULL pointer derefs if ctlr->dma_tx or\nctlr->dma_rx are not set.\n\nFix the NULL pointer deref by checking that ctlr->dma_tx and\nctlr->dma_rx are valid pointers before accessing them."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: bcm2835: bcm2835_spi_handle_err(): corrige la desreferencia del puntero NULL para transferencias que no sean DMA En caso de que se agote el tiempo de espera de una transferencia basada en IRQ, se llama a la funci\u00f3n bcm2835_spi_handle_err(). Desde el commit 1513ceee70f2 (\"spi: bcm2835: Drop dma_pending flag\") las transferencias DMA TX y RX se cancelan incondicionalmente, lo que lleva a desreferencias del puntero NULL si no se configuran ctlr->dma_tx o ctlr->dma_rx. Corrija la desreferencia del puntero NULL comprobando que ctlr->dma_tx y ctlr->dma_rx sean punteros v\u00e1lidos antes de acceder a ellos."
    }
  ],
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        "type": "Primary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
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