{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2024-56692",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2024-56692"
  ],
  "published": "2024-12-28T09:46:17Z",
  "summary": "f2fs: fix to do sanity check on node blkaddr in truncate_node()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to do sanity check on node blkaddr in truncate_node()\n\nsyzbot reports a f2fs bug as below:\n\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/segment.c:2534!\nRIP: 0010:f2fs_invalidate_blocks+0x35f/0x370 fs/f2fs/segment.c:2534\nCall Trace:\n truncate_node+0x1ae/0x8c0 fs/f2fs/node.c:909\n f2fs_remove_inode_page+0x5c2/0x870 fs/f2fs/node.c:1288\n f2fs_evict_inode+0x879/0x15c0 fs/f2fs/inode.c:856\n evict+0x4e8/0x9b0 fs/inode.c:723\n f2fs_handle_failed_inode+0x271/0x2e0 fs/f2fs/inode.c:986\n f2fs_create+0x357/0x530 fs/f2fs/namei.c:394\n lookup_open fs/namei.c:3595 [inline]\n open_last_lookups fs/namei.c:3694 [inline]\n path_openat+0x1c03/0x3590 fs/namei.c:3930\n do_filp_open+0x235/0x490 fs/namei.c:3960\n do_sys_openat2+0x13e/0x1d0 fs/open.c:1415\n do_sys_open fs/open.c:1430 [inline]\n __do_sys_openat fs/open.c:1446 [inline]\n __se_sys_openat fs/open.c:1441 [inline]\n __x64_sys_openat+0x247/0x2a0 fs/open.c:1441\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0010:f2fs_invalidate_blocks+0x35f/0x370 fs/f2fs/segment.c:2534\n\nThe root cause is: on a fuzzed image, blkaddr in nat entry may be\ncorrupted, then it will cause system panic when using it in\nf2fs_invalidate_blocks(), to avoid this, let's add sanity check on\nnat blkaddr in truncate_node().",
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  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-56692"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/27d6e7eff07f8cce8e83b162d8f21a07458c860d"
    },
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      "url": "https://git.kernel.org/stable/c/c1077078ce4589b5e5387f6b0aaa0d4534b9eb57"
    },
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      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0a5c8b3fbf6200f1c66062d307c9a52084917788"
    },
    {
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    }
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  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-05T11:52:36Z"
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}