{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.0.12-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu: check num_entries in GEM_OP GET_MAPPING_INFO  kvcalloc(args-\u003enum_entries, sizeof(*vm_entries), GFP_KERNEL) at amdgpu_gem.c:1050 uses the user-supplied num_entries directly without any upper bounds check. Since num_entries is a __u32 and sizeof(drm_amdgpu_gem_vm_entry) is 32 bytes, a large num_entries produces an allocation exceeding INT_MAX, triggering WARNING in __kvmalloc_node_noprof(), causing a kernel WARNING, TAINT_WARN, and panic on CONFIG_PANIC_ON_WARN=y systems.  Add a size bounds check before we invoke the kvzalloc() to reject oversized num_entries early with -EINVAL.  (cherry picked from commit 1fe7bf5457f6efd7be60b17e23163ba54341d73d)",
  "id": "DEBIAN-CVE-2026-63878",
  "modified": "2026-09-14T16:47:30.526180793Z",
  "published": "2026-07-19T16:17:04.800Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-63878"
    }
  ],
  "upstream": [
    "CVE-2026-63878"
  ]
}