{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2023-53035",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2023-53035"
  ],
  "published": "2025-05-02T15:56:53Z",
  "summary": "nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy()\n\nThe ioctl helper function nilfs_ioctl_wrap_copy(), which exchanges a\nmetadata array to/from user space, may copy uninitialized buffer regions\nto user space memory for read-only ioctl commands NILFS_IOCTL_GET_SUINFO\nand NILFS_IOCTL_GET_CPINFO.\n\nThis can occur when the element size of the user space metadata given by\nthe v_size member of the argument nilfs_argv structure is larger than the\nsize of the metadata element (nilfs_suinfo structure or nilfs_cpinfo\nstructure) on the file system side.\n\nKMSAN-enabled kernels detect this issue as follows:\n\n BUG: KMSAN: kernel-infoleak in instrument_copy_to_user\n include/linux/instrumented.h:121 [inline]\n BUG: KMSAN: kernel-infoleak in _copy_to_user+0xc0/0x100 lib/usercopy.c:33\n  instrument_copy_to_user include/linux/instrumented.h:121 [inline]\n  _copy_to_user+0xc0/0x100 lib/usercopy.c:33\n  copy_to_user include/linux/uaccess.h:169 [inline]\n  nilfs_ioctl_wrap_copy+0x6fa/0xc10 fs/nilfs2/ioctl.c:99\n  nilfs_ioctl_get_info fs/nilfs2/ioctl.c:1173 [inline]\n  nilfs_ioctl+0x2402/0x4450 fs/nilfs2/ioctl.c:1290\n  nilfs_compat_ioctl+0x1b8/0x200 fs/nilfs2/ioctl.c:1343\n  __do_compat_sys_ioctl fs/ioctl.c:968 [inline]\n  __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910\n  __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910\n  do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]\n  __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178\n  do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203\n  do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246\n  entry_SYSENTER_compat_after_hwframe+0x70/0x82\n\n Uninit was created at:\n  __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5572\n  alloc_pages+0xab0/0xd80 mm/mempolicy.c:2287\n  __get_free_pages+0x34/0xc0 mm/page_alloc.c:5599\n  nilfs_ioctl_wrap_copy+0x223/0xc10 fs/nilfs2/ioctl.c:74\n  nilfs_ioctl_get_info fs/nilfs2/ioctl.c:1173 [inline]\n  nilfs_ioctl+0x2402/0x4450 fs/nilfs2/ioctl.c:1290\n  nilfs_compat_ioctl+0x1b8/0x200 fs/nilfs2/ioctl.c:1343\n  __do_compat_sys_ioctl fs/ioctl.c:968 [inline]\n  __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910\n  __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910\n  do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]\n  __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178\n  do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203\n  do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246\n  entry_SYSENTER_compat_after_hwframe+0x70/0x82\n\n Bytes 16-127 of 3968 are uninitialized\n ...\n\nThis eliminates the leak issue by initializing the page allocated as\nbuffer using get_zeroed_page().",
  "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": "6.1.22"
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53035"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a94932381e8dae4117e9129b3c1282e18aa97b05"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9c5034e9a0e03db8d5e9eabb176340259b5b97e4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8f5cbf6a8c0e19b062b829c5b7aca01468bb57f6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d18db946cc6a394291539e030df32324285648f7"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5bb105cc72beb9d51bf12f5c657336d2d35bdc5d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/5f33b042f74fc9662eba17f4cd19b07d84bbc6c5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8a6550b365c0ce2e65905de57dcbfe1f7d629726"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/003587000276f81d0114b5ce773d80c119d8cb30"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}