ghsa-mgjq-wwgf-853f
Vulnerability from github
Published
2025-05-01 15:31
Modified
2025-05-01 15:31
Details

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Migrate in CPU page fault use current mm

migrate_vma_setup shows below warning because we don't hold another process mm mmap_lock. We should use current vmf->vma->vm_mm instead, the caller already hold current mmap lock inside CPU page fault handler.

WARNING: CPU: 10 PID: 3054 at include/linux/mmap_lock.h:155 find_vma Call Trace: walk_page_range+0x76/0x150 migrate_vma_setup+0x18a/0x640 svm_migrate_vram_to_ram+0x245/0xa10 [amdgpu] svm_migrate_to_ram+0x36f/0x470 [amdgpu] do_swap_page+0xcfe/0xec0 __handle_mm_fault+0x96b/0x15e0 handle_mm_fault+0x13f/0x3e0 do_user_addr_fault+0x1e7/0x690

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49843"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T15:16:07Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Migrate in CPU page fault use current mm\n\nmigrate_vma_setup shows below warning because we don\u0027t hold another\nprocess mm mmap_lock. We should use current vmf-\u003evma-\u003evm_mm instead, the\ncaller already hold current mmap lock inside CPU page fault handler.\n\n WARNING: CPU: 10 PID: 3054 at include/linux/mmap_lock.h:155 find_vma\n Call Trace:\n  walk_page_range+0x76/0x150\n  migrate_vma_setup+0x18a/0x640\n  svm_migrate_vram_to_ram+0x245/0xa10 [amdgpu]\n  svm_migrate_to_ram+0x36f/0x470 [amdgpu]\n  do_swap_page+0xcfe/0xec0\n  __handle_mm_fault+0x96b/0x15e0\n  handle_mm_fault+0x13f/0x3e0\n  do_user_addr_fault+0x1e7/0x690",
  "id": "GHSA-mgjq-wwgf-853f",
  "modified": "2025-05-01T15:31:49Z",
  "published": "2025-05-01T15:31:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49843"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/128e284c6cccf5875261569fa3bb07558870c17f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1dea25e25acd990d7657940ffcab8354c28fa292"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a876060892ba52dd67d197c78b955e62657d906"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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