{
  "id": "CVE-2023-52576",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-03-02T22:15:49.490",
  "lastModified": "2024-03-04T13:58:23.447",
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nx86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()\n\nThe code calling ima_free_kexec_buffer() runs long after the memblock\nallocator has already been torn down, potentially resulting in a use\nafter free in memblock_isolate_range().\n\nWith KASAN or KFENCE, this use after free will result in a BUG\nfrom the idle task, and a subsequent kernel panic.\n\nSwitch ima_free_kexec_buffer() over to memblock_free_late() to avoid\nthat bug."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: x86/mm, kexec, ima: utilice memblock_free_late() desde ima_free_kexec_buffer(). El c\u00f3digo que llama a ima_free_kexec_buffer() se ejecuta mucho despu\u00e9s de que el asignador de memblock ya se haya eliminado, lo que podr\u00eda provocar un \u00daselo despu\u00e9s de forma gratuita en memblock_isolate_range(). Con KASAN o KFENCE, este Use After Free resultar\u00e1 en un ERROR de la tarea inactiva y un posterior p\u00e1nico en el kernel. Cambie ima_free_kexec_buffer() a memblock_free_late() para evitar ese error."
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}