{
  "id": "CVE-2022-48714",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-06-20T11:15:55.033",
  "lastModified": "2024-06-20T11:15:55.033",
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Use VM_MAP instead of VM_ALLOC for ringbuf\n\nAfter commit 2fd3fb0be1d1 (\"kasan, vmalloc: unpoison VM_ALLOC pages\nafter mapping\"), non-VM_ALLOC mappings will be marked as accessible\nin __get_vm_area_node() when KASAN is enabled. But now the flag for\nringbuf area is VM_ALLOC, so KASAN will complain out-of-bound access\nafter vmap() returns. Because the ringbuf area is created by mapping\nallocated pages, so use VM_MAP instead.\n\nAfter the change, info in /proc/vmallocinfo also changes from\n  [start]-[end]   24576 ringbuf_map_alloc+0x171/0x290 vmalloc user\nto\n  [start]-[end]   24576 ringbuf_map_alloc+0x171/0x290 vmap user"
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/5e457aeab52a5947619e1f18047f4d2f3212b3eb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6304a613a97d6dcd49b93fbad31e9f39d1e138d6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b293dcc473d22a62dc6d78de2b15e4f49515db56",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d578933f6226d5419af9306746efa1c693cbaf9c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}