{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-43859",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-43859"
  ],
  "published": "2024-08-17T09:24:40Z",
  "summary": "f2fs: fix to truncate preallocated blocks in f2fs_file_open()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to truncate preallocated blocks in f2fs_file_open()\n\nchenyuwen reports a f2fs bug as below:\n\nUnable to handle kernel NULL pointer dereference at virtual address 0000000000000011\n fscrypt_set_bio_crypt_ctx+0x78/0x1e8\n f2fs_grab_read_bio+0x78/0x208\n f2fs_submit_page_read+0x44/0x154\n f2fs_get_read_data_page+0x288/0x5f4\n f2fs_get_lock_data_page+0x60/0x190\n truncate_partial_data_page+0x108/0x4fc\n f2fs_do_truncate_blocks+0x344/0x5f0\n f2fs_truncate_blocks+0x6c/0x134\n f2fs_truncate+0xd8/0x200\n f2fs_iget+0x20c/0x5ac\n do_garbage_collect+0x5d0/0xf6c\n f2fs_gc+0x22c/0x6a4\n f2fs_disable_checkpoint+0xc8/0x310\n f2fs_fill_super+0x14bc/0x1764\n mount_bdev+0x1b4/0x21c\n f2fs_mount+0x20/0x30\n legacy_get_tree+0x50/0xbc\n vfs_get_tree+0x5c/0x1b0\n do_new_mount+0x298/0x4cc\n path_mount+0x33c/0x5fc\n __arm64_sys_mount+0xcc/0x15c\n invoke_syscall+0x60/0x150\n el0_svc_common+0xb8/0xf8\n do_el0_svc+0x28/0xa0\n el0_svc+0x24/0x84\n el0t_64_sync_handler+0x88/0xec\n\nIt is because inode.i_crypt_info is not initialized during below path:\n- mount\n - f2fs_fill_super\n  - f2fs_disable_checkpoint\n   - f2fs_gc\n    - f2fs_iget\n     - f2fs_truncate\n\nSo, let's relocate truncation of preallocated blocks to f2fs_file_open(),\nafter fscrypt_file_open().",
  "affected": [
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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-2024-43859"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5f04969136db674f133781626e0b692c5f2bf2f0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f44a25a8bfe0c15d33244539696cd9119cf44d18"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3ba0ae885215b325605ff7ebf6de12ac2adf204d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/298b1e4182d657c3e388adcc29477904e9600ed5"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
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}