{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53294",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53294"
  ],
  "published": "2025-09-16T08:11:48Z",
  "summary": "fs/ntfs3: Fix null-ptr-deref on inode->i_op in ntfs_lookup()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix null-ptr-deref on inode->i_op in ntfs_lookup()\n\nSyzbot reported a null-ptr-deref bug:\n\nntfs3: loop0: Different NTFS' sector size (1024) and media sector size\n(512)\nntfs3: loop0: Mark volume as dirty due to NTFS errors\ngeneral protection fault, probably for non-canonical address\n0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nRIP: 0010:d_flags_for_inode fs/dcache.c:1980 [inline]\nRIP: 0010:__d_add+0x5ce/0x800 fs/dcache.c:2796\nCall Trace:\n <TASK>\n d_splice_alias+0x122/0x3b0 fs/dcache.c:3191\n lookup_open fs/namei.c:3391 [inline]\n open_last_lookups fs/namei.c:3481 [inline]\n path_openat+0x10e6/0x2df0 fs/namei.c:3688\n do_filp_open+0x264/0x4f0 fs/namei.c:3718\n do_sys_openat2+0x124/0x4e0 fs/open.c:1310\n do_sys_open fs/open.c:1326 [inline]\n __do_sys_open fs/open.c:1334 [inline]\n __se_sys_open fs/open.c:1330 [inline]\n __x64_sys_open+0x221/0x270 fs/open.c:1330\n do_syscall_x64 arch/x86/entry/common.c:50 [inline]\n do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nIf the MFT record of ntfs inode is not a base record, inode->i_op can be\nNULL. And a null-ptr-deref may happen:\n\nntfs_lookup()\n    dir_search_u() # inode->i_op is set to NULL\n    d_splice_alias()\n        __d_add()\n            d_flags_for_inode() # inode->i_op->get_link null-ptr-deref\n\nFix this by adding a Check on inode->i_op before calling the\nd_splice_alias() function.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.21-1+rpt1"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v6",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v7l",
            "binary_version": "1:6.1.21-1+rpt1"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi1-rpi-v8",
            "binary_version": "1:6.1.21-1+rpt1"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.21-1+rpt1": {
            "linux_commit": "0afb5e98488aed7017b9bf321b575d0177feb7ed",
            "upstream_version": "6.1.21",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.29"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53294"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f8d9e062a695a3665c4635c4f216a75912687598"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d69d5e2a81df94534bdb468bcdd26060fcb7191a"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2ba22cbc6a1cf4b58195adbee0b80262e53992d3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e78240bc4b94fc42854d65e657bb998100cc8e1b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/254e69f284d7270e0abdc023ee53b71401c3ba0c"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}