fkie_cve-2024-46896
Vulnerability from fkie_nvd
Published
2025-01-11 13:15
Modified
2025-01-11 13:15
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: don't access invalid sched Since 2320c9e6a768 ("drm/sched: memset() 'job' in drm_sched_job_init()") accessing job->base.sched can produce unexpected results as the initialisation of (*job)->base.sched done in amdgpu_job_alloc is overwritten by the memset. This commit fixes an issue when a CS would fail validation and would be rejected after job->num_ibs is incremented. In this case, amdgpu_ib_free(ring->adev, ...) will be called, which would crash the machine because the ring value is bogus. To fix this, pass a NULL pointer to amdgpu_ib_free(): we can do this because the device is actually not used in this function. The next commit will remove the ring argument completely. (cherry picked from commit 2ae520cb12831d264ceb97c61f72c59d33c0dbd7)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65501a4fd84ecdc0af863dbb37759242aab9f2dd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67291d601f2b032062b1b2f60ffef1b63e10094c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a93b1020eb9386d7da11608477121b10079c076a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/da6b2c626ae73c303378ce9eaf6e3eaf16c9925a
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: don\u0027t access invalid sched\n\nSince 2320c9e6a768 (\"drm/sched: memset() \u0027job\u0027 in drm_sched_job_init()\")\naccessing job-\u003ebase.sched can produce unexpected results as the initialisation\nof (*job)-\u003ebase.sched done in amdgpu_job_alloc is overwritten by the\nmemset.\n\nThis commit fixes an issue when a CS would fail validation and would\nbe rejected after job-\u003enum_ibs is incremented. In this case,\namdgpu_ib_free(ring-\u003eadev, ...) will be called, which would crash the\nmachine because the ring value is bogus.\n\nTo fix this, pass a NULL pointer to amdgpu_ib_free(): we can do this\nbecause the device is actually not used in this function.\n\nThe next commit will remove the ring argument completely.\n\n(cherry picked from commit 2ae520cb12831d264ceb97c61f72c59d33c0dbd7)"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amdgpu: no acceder a sched no v\u00e1lido Desde 2320c9e6a768 (\"drm/sched: memset() \u0027job\u0027 en drm_sched_job_init()\") acceder a job-\u0026gt;base.sched puede producir resultados inesperados ya que la inicializaci\u00f3n de (*job)-\u0026gt;base.sched realizada en amdgpu_job_alloc es sobrescrita por memset. Esta confirmaci\u00f3n corrige un problema cuando un CS fallar\u00eda la validaci\u00f3n y ser\u00eda rechazado despu\u00e9s de que se incremente job-\u0026gt;num_ibs. En este caso, se llamar\u00e1 a amdgpu_ib_free(ring-\u0026gt;adev, ...), lo que bloquear\u00eda la m\u00e1quina porque el valor de ring es falso. Para corregir esto, pase un puntero NULL a amdgpu_ib_free(): podemos hacer esto porque el dispositivo en realidad no se usa en esta funci\u00f3n. La pr\u00f3xima confirmaci\u00f3n eliminar\u00e1 el argumento ring por completo. (seleccionado del commit 2ae520cb12831d264ceb97c61f72c59d33c0dbd7)"
    }
  ],
  "id": "CVE-2024-46896",
  "lastModified": "2025-01-11T13:15:21.643",
  "metrics": {},
  "published": "2025-01-11T13:15:21.643",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/65501a4fd84ecdc0af863dbb37759242aab9f2dd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/67291d601f2b032062b1b2f60ffef1b63e10094c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a93b1020eb9386d7da11608477121b10079c076a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/da6b2c626ae73c303378ce9eaf6e3eaf16c9925a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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