{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-50222",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-50222"
  ],
  "published": "2024-11-09T10:15:51Z",
  "summary": "iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP\n\ngeneric/077 on x86_32 CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP=y with highmem,\non huge=always tmpfs, issues a warning and then hangs (interruptibly):\n\nWARNING: CPU: 5 PID: 3517 at mm/highmem.c:622 kunmap_local_indexed+0x62/0xc9\nCPU: 5 UID: 0 PID: 3517 Comm: cp Not tainted 6.12.0-rc4 #2\n...\ncopy_page_from_iter_atomic+0xa6/0x5ec\ngeneric_perform_write+0xf6/0x1b4\nshmem_file_write_iter+0x54/0x67\n\nFix copy_page_from_iter_atomic() by limiting it in that case\n(include/linux/skbuff.h skb_frag_must_loop() does similar).\n\nBut going forward, perhaps CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP is too\nsurprising, has outlived its usefulness, and should just be removed?",
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        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-50222"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4f7ffa83fa79dd52efbaef366c850aaaae06a469"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3a303409f271dfe0987b8f79595138340497a32d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c749d9b7ebbc5716af7a95f7768634b30d9446ec"
    }
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    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
  }
}