FKIE_CVE-2023-54255

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-04-15 00:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: sh: dma: Fix DMA channel offset calculation Various SoCs of the SH3, SH4 and SH4A family, which use this driver, feature a differing number of DMA channels, which can be distributed between up to two DMAC modules. The existing implementation fails to correctly accommodate for all those variations, resulting in wrong channel offset calculations and leading to kernel panics. Rewrite dma_base_addr() in order to properly calculate channel offsets in a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that the correct DMAC module base is selected for the DMAOR register.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/196f6c71905aa384c0177acf194a1144d480333b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/479380acfa63247b5ac62476138f847aefc62692
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4989627157735c1f1619f08e5bc1592418e7c878
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8fb11fa4805699c6b73a9c8a9d45807f9874abe3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1c946552af299f4fa85bf7da15e328123771128
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e82e47584847129a20b8c9f4a1dcde09374fb0e0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e9e33faea104381bac80ac79328f0540fc2969f2
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsh: dma: Fix DMA channel offset calculation\n\nVarious SoCs of the SH3, SH4 and SH4A family, which use this driver,\nfeature a differing number of DMA channels, which can be distributed\nbetween up to two DMAC modules. The existing implementation fails to\ncorrectly accommodate for all those variations, resulting in wrong\nchannel offset calculations and leading to kernel panics.\n\nRewrite dma_base_addr() in order to properly calculate channel offsets\nin a DMAC module. Fix dmaor_read_reg() and dmaor_write_reg(), so that\nthe correct DMAC module base is selected for the DMAOR register."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nsh: dma: Correcci\u00f3n del c\u00e1lculo del desplazamiento del canal DMA\n\nVarios SoCs de la familia SH3, SH4 y SH4A, que utilizan este controlador, presentan un n\u00famero diferente de canales DMA, que pueden distribuirse entre hasta dos m\u00f3dulos DMAC. La implementaci\u00f3n existente no logra adaptarse correctamente a todas esas variaciones, lo que resulta en c\u00e1lculos de desplazamiento de canal incorrectos y conduce a p\u00e1nicos del kernel.\n\nReescribir dma_base_addr() para calcular correctamente los desplazamientos de canal en un m\u00f3dulo DMAC. Corregir dmaor_read_reg() y dmaor_write_reg(), para que se seleccione la base correcta del m\u00f3dulo DMAC para el registro DMAOR."
    }
  ],
  "id": "CVE-2023-54255",
  "lastModified": "2026-04-15T00:35:42.020",
  "metrics": {},
  "published": "2025-12-30T13:16:14.217",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/196f6c71905aa384c0177acf194a1144d480333b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/479380acfa63247b5ac62476138f847aefc62692"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4989627157735c1f1619f08e5bc1592418e7c878"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8fb11fa4805699c6b73a9c8a9d45807f9874abe3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bca700b48c72f4ffeee977a2ed0eb4a6b4b7b8ad"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d1c946552af299f4fa85bf7da15e328123771128"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e82e47584847129a20b8c9f4a1dcde09374fb0e0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e9e33faea104381bac80ac79328f0540fc2969f2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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