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GHSA-8XFF-Q6G9-RJJV

Vulnerability from github – Published: 2025-05-02 18:31 – Updated: 2026-01-27 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy()

The ioctl helper function nilfs_ioctl_wrap_copy(), which exchanges a metadata array to/from user space, may copy uninitialized buffer regions to user space memory for read-only ioctl commands NILFS_IOCTL_GET_SUINFO and NILFS_IOCTL_GET_CPINFO.

This can occur when the element size of the user space metadata given by the v_size member of the argument nilfs_argv structure is larger than the size of the metadata element (nilfs_suinfo structure or nilfs_cpinfo structure) on the file system side.

KMSAN-enabled kernels detect this issue as follows:

BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:121 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xc0/0x100 lib/usercopy.c:33 instrument_copy_to_user include/linux/instrumented.h:121 [inline] _copy_to_user+0xc0/0x100 lib/usercopy.c:33 copy_to_user include/linux/uaccess.h:169 [inline] nilfs_ioctl_wrap_copy+0x6fa/0xc10 fs/nilfs2/ioctl.c:99 nilfs_ioctl_get_info fs/nilfs2/ioctl.c:1173 [inline] nilfs_ioctl+0x2402/0x4450 fs/nilfs2/ioctl.c:1290 nilfs_compat_ioctl+0x1b8/0x200 fs/nilfs2/ioctl.c:1343 __do_compat_sys_ioctl fs/ioctl.c:968 [inline] __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at: __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5572 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2287 __get_free_pages+0x34/0xc0 mm/page_alloc.c:5599 nilfs_ioctl_wrap_copy+0x223/0xc10 fs/nilfs2/ioctl.c:74 nilfs_ioctl_get_info fs/nilfs2/ioctl.c:1173 [inline] nilfs_ioctl+0x2402/0x4450 fs/nilfs2/ioctl.c:1290 nilfs_compat_ioctl+0x1b8/0x200 fs/nilfs2/ioctl.c:1343 __do_compat_sys_ioctl fs/ioctl.c:968 [inline] __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Bytes 16-127 of 3968 are uninitialized ...

This eliminates the leak issue by initializing the page allocated as buffer using get_zeroed_page().

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2023-53035"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-02T16:15:22Z",
    "severity": "HIGH"
  },
  "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().",
  "id": "GHSA-8xff-q6g9-rjjv",
  "modified": "2026-01-27T21:31:33Z",
  "published": "2025-05-02T18:31:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53035"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/003587000276f81d0114b5ce773d80c119d8cb30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5bb105cc72beb9d51bf12f5c657336d2d35bdc5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5f33b042f74fc9662eba17f4cd19b07d84bbc6c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a6550b365c0ce2e65905de57dcbfe1f7d629726"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8f5cbf6a8c0e19b062b829c5b7aca01468bb57f6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c5034e9a0e03db8d5e9eabb176340259b5b97e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a94932381e8dae4117e9129b3c1282e18aa97b05"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d18db946cc6a394291539e030df32324285648f7"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-53035 (GCVE-0-2023-53035)

Vulnerability from cvelistv5 – Published: 2025-05-02 15:54 – Updated: 2026-05-11 19:37

Title

nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy()

Summary

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy() The ioctl helper function nilfs_ioctl_wrap_copy(), which exchanges a metadata array to/from user space, may copy uninitialized buffer regions to user space memory for read-only ioctl commands NILFS_IOCTL_GET_SUINFO and NILFS_IOCTL_GET_CPINFO. This can occur when the element size of the user space metadata given by the v_size member of the argument nilfs_argv structure is larger than the size of the metadata element (nilfs_suinfo structure or nilfs_cpinfo structure) on the file system side. KMSAN-enabled kernels detect this issue as follows: BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:121 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xc0/0x100 lib/usercopy.c:33 instrument_copy_to_user include/linux/instrumented.h:121 [inline] _copy_to_user+0xc0/0x100 lib/usercopy.c:33 copy_to_user include/linux/uaccess.h:169 [inline] nilfs_ioctl_wrap_copy+0x6fa/0xc10 fs/nilfs2/ioctl.c:99 nilfs_ioctl_get_info fs/nilfs2/ioctl.c:1173 [inline] nilfs_ioctl+0x2402/0x4450 fs/nilfs2/ioctl.c:1290 nilfs_compat_ioctl+0x1b8/0x200 fs/nilfs2/ioctl.c:1343 __do_compat_sys_ioctl fs/ioctl.c:968 [inline] __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Uninit was created at: __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5572 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2287 __get_free_pages+0x34/0xc0 mm/page_alloc.c:5599 nilfs_ioctl_wrap_copy+0x223/0xc10 fs/nilfs2/ioctl.c:74 nilfs_ioctl_get_info fs/nilfs2/ioctl.c:1173 [inline] nilfs_ioctl+0x2402/0x4450 fs/nilfs2/ioctl.c:1290 nilfs_compat_ioctl+0x1b8/0x200 fs/nilfs2/ioctl.c:1343 __do_compat_sys_ioctl fs/ioctl.c:968 [inline] __se_compat_sys_ioctl+0x7dd/0x1000 fs/ioctl.c:910 __ia32_compat_sys_ioctl+0x93/0xd0 fs/ioctl.c:910 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Bytes 16-127 of 3968 are uninitialized ... This eliminates the leak issue by initializing the page allocated as buffer using get_zeroed_page().

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/a94932381e8dae411…
https://git.kernel.org/stable/c/9c5034e9a0e03db8d…
https://git.kernel.org/stable/c/8f5cbf6a8c0e19b06…
https://git.kernel.org/stable/c/d18db946cc6a39429…
https://git.kernel.org/stable/c/5bb105cc72beb9d51…
https://git.kernel.org/stable/c/5f33b042f74fc9662…
https://git.kernel.org/stable/c/8a6550b365c0ce2e6…
https://git.kernel.org/stable/c/003587000276f81d0…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < a94932381e8dae4117e9129b3c1282e18aa97b05 (git) Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < 9c5034e9a0e03db8d5e9eabb176340259b5b97e4 (git) Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < 8f5cbf6a8c0e19b062b829c5b7aca01468bb57f6 (git) Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < d18db946cc6a394291539e030df32324285648f7 (git) Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < 5bb105cc72beb9d51bf12f5c657336d2d35bdc5d (git) Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < 5f33b042f74fc9662eba17f4cd19b07d84bbc6c5 (git) Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < 8a6550b365c0ce2e65905de57dcbfe1f7d629726 (git) Affected: 003ff182fddde09ddfb8d079bbdb02f9d2122082 , < 003587000276f81d0114b5ce773d80c119d8cb30 (git)
Linux	Linux	Affected: 2.6.31 Unaffected: 0 , < 2.6.31 (semver) Unaffected: 4.14.312 , ≤ 4.14.* (semver) Unaffected: 4.19.280 , ≤ 4.19.* (semver) Unaffected: 5.4.240 , ≤ 5.4.* (semver) Unaffected: 5.10.177 , ≤ 5.10.* (semver) Unaffected: 5.15.105 , ≤ 5.15.* (semver) Unaffected: 6.1.22 , ≤ 6.1.* (semver) Unaffected: 6.2.9 , ≤ 6.2.* (semver) Unaffected: 6.3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/nilfs2/ioctl.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.4.240",
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.22",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.2.*",
              "status": "unaffected",
              "version": "6.2.9",
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            },
            {
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              "version": "6.3",
              "versionType": "original_commit_for_fix"
            }
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        }
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        {
          "lang": "en",
          "value": "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()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:37:18.401Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a94932381e8dae4117e9129b3c1282e18aa97b05"
        },
        {
          "url": "https://git.kernel.org/stable/c/9c5034e9a0e03db8d5e9eabb176340259b5b97e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/8f5cbf6a8c0e19b062b829c5b7aca01468bb57f6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d18db946cc6a394291539e030df32324285648f7"
        },
        {
          "url": "https://git.kernel.org/stable/c/5bb105cc72beb9d51bf12f5c657336d2d35bdc5d"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f33b042f74fc9662eba17f4cd19b07d84bbc6c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a6550b365c0ce2e65905de57dcbfe1f7d629726"
        },
        {
          "url": "https://git.kernel.org/stable/c/003587000276f81d0114b5ce773d80c119d8cb30"
        }
      ],
      "title": "nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53035",
    "datePublished": "2025-05-02T15:54:54.876Z",
    "dateReserved": "2025-03-27T16:40:15.763Z",
    "dateUpdated": "2026-05-11T19:37:18.401Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

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Action not permitted

GHSA-8XFF-Q6G9-RJJV

CVE-2023-53035 (GCVE-0-2023-53035)

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