{
  "id": "CVE-2023-52774",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-05-21T16:15:16.537",
  "lastModified": "2024-11-21T08:40:33.640",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: protect device queue against concurrent access\n\nIn dasd_profile_start() the amount of requests on the device queue are\ncounted. The access to the device queue is unprotected against\nconcurrent access. With a lot of parallel I/O, especially with alias\ndevices enabled, the device queue can change while dasd_profile_start()\nis accessing the queue. In the worst case this leads to a kernel panic\ndue to incorrect pointer accesses.\n\nFix this by taking the device lock before accessing the queue and\ncounting the requests. Additionally the check for a valid profile data\npointer can be done earlier to avoid unnecessary locking in a hot path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: s390/dasd: protege la cola de dispositivos contra el acceso concurrente. En dasd_profile_start() se cuenta la cantidad de solicitudes en la cola de dispositivos. El acceso a la cola de dispositivos no est\u00e1 protegido contra el acceso simult\u00e1neo. Con muchas E/S paralelas, especialmente con dispositivos alias habilitados, la cola de dispositivos puede cambiar mientras dasd_profile_start() accede a la cola. En el peor de los casos, esto provoca un p\u00e1nico en el kernel debido a accesos incorrectos al puntero. Solucione este problema bloqueando el dispositivo antes de acceder a la cola y contando las solicitudes. Adem\u00e1s, la verificaci\u00f3n de un puntero de datos de perfil v\u00e1lido se puede realizar antes para evitar bloqueos innecesarios en una ruta activa."
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6062c527d0403cef27c54b91ac8390c3a497b250",
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}