Vulnerability-Lookup

GHSA-85WW-WM3W-C8W6

Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2026-08-04 12:34

Details

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

fs/ntfs3: Fix OOB read in indx_insert_into_buffer

Syzbot reported a OOB read bug:

BUG: KASAN: slab-out-of-bounds in indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755 Read of size 17168 at addr ffff8880255e06c0 by task syz-executor308/3630

Call Trace: memmove+0x25/0x60 mm/kasan/shadow.c:54 indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755 indx_insert_entry+0x446/0x6b0 fs/ntfs3/index.c:1863 ntfs_create_inode+0x1d3f/0x35c0 fs/ntfs3/inode.c:1548 ntfs_create+0x3e/0x60 fs/ntfs3/namei.c:100 lookup_open fs/namei.c:3413 [inline]

If the member struct INDEX_BUFFER *index of struct indx_node is incorrect, that is, the value of __le32 used is greater than the value of __le32 total in struct INDEX_HDR. Therefore, OOB read occurs when memmove is called in indx_insert_into_buffer(). Fix this by adding a check in hdr_find_e().

Severity

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2023-54063"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:16:08Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix OOB read in indx_insert_into_buffer\n\nSyzbot reported a OOB read bug:\n\nBUG: KASAN: slab-out-of-bounds in indx_insert_into_buffer+0xaa3/0x13b0\nfs/ntfs3/index.c:1755\nRead of size 17168 at addr ffff8880255e06c0 by task syz-executor308/3630\n\nCall Trace:\n \u003cTASK\u003e\n memmove+0x25/0x60 mm/kasan/shadow.c:54\n indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755\n indx_insert_entry+0x446/0x6b0 fs/ntfs3/index.c:1863\n ntfs_create_inode+0x1d3f/0x35c0 fs/ntfs3/inode.c:1548\n ntfs_create+0x3e/0x60 fs/ntfs3/namei.c:100\n lookup_open fs/namei.c:3413 [inline]\n\nIf the member struct INDEX_BUFFER *index of struct indx_node is\nincorrect, that is, the value of __le32 used is greater than the value\nof __le32 total in struct INDEX_HDR. Therefore, OOB read occurs when\nmemmove is called in indx_insert_into_buffer().\nFix this by adding a check in hdr_find_e().",
  "id": "GHSA-85ww-wm3w-c8w6",
  "modified": "2026-08-04T12:34:44Z",
  "published": "2025-12-24T15:30:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54063"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17048287ac79abd33b275ac3b5738285d406481b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4bf3b564e27a518f158a83d5e1a50064ed6136a0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a7e5dba10ba1402dd6c2f961a70320770865c4a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8c44949044e5f7f864525fdffe8e95135ce9ce5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cd7e1d67924081717c5c96ead758a1a77867689a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-54063 (GCVE-0-2023-54063)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:23 – Updated: 2026-08-05 09:16

Title

fs/ntfs3: Fix OOB read in indx_insert_into_buffer

Summary

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Fix OOB read in indx_insert_into_buffer Syzbot reported a OOB read bug: BUG: KASAN: slab-out-of-bounds in indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755 Read of size 17168 at addr ffff8880255e06c0 by task syz-executor308/3630 Call Trace: <TASK> memmove+0x25/0x60 mm/kasan/shadow.c:54 indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755 indx_insert_entry+0x446/0x6b0 fs/ntfs3/index.c:1863 ntfs_create_inode+0x1d3f/0x35c0 fs/ntfs3/inode.c:1548 ntfs_create+0x3e/0x60 fs/ntfs3/namei.c:100 lookup_open fs/namei.c:3413 [inline] If the member struct INDEX_BUFFER *index of struct indx_node is incorrect, that is, the value of __le32 used is greater than the value of __le32 total in struct INDEX_HDR. Therefore, OOB read occurs when memmove is called in indx_insert_into_buffer(). Fix this by adding a check in hdr_find_e().

Severity

7.8 (High)


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

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/cd7e1d67924081717…
https://git.kernel.org/stable/c/17048287ac79abd33…
https://git.kernel.org/stable/c/a7e5dba10ba1402dd…
https://git.kernel.org/stable/c/4bf3b564e27a518f1…
https://git.kernel.org/stable/c/b8c44949044e5f7f8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < cd7e1d67924081717c5c96ead758a1a77867689a (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 17048287ac79abd33b275ac3b5738285d406481b (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < a7e5dba10ba1402dd6c2f961a70320770865c4a5 (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < 4bf3b564e27a518f158a83d5e1a50064ed6136a0 (git) Affected: 82cae269cfa953032fbb8980a7d554d60fb00b17 , < b8c44949044e5f7f864525fdffe8e95135ce9ce5 (git)
Linux	Linux	Affected: 5.15 Unaffected: 0 , < 5.15 (semver) Unaffected: 5.15.111 , ≤ 5.15.* (semver) Unaffected: 6.1.28 , ≤ 6.1.* (semver) Unaffected: 6.2.15 , ≤ 6.2.* (semver) Unaffected: 6.3.2 , ≤ 6.3.* (semver) Unaffected: 6.4 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/ntfs3/index.c"
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          "vendor": "Linux",
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "a7e5dba10ba1402dd6c2f961a70320770865c4a5",
              "status": "affected",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
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        {
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          "product": "Linux",
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          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.2.15",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.3.2",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix OOB read in indx_insert_into_buffer\n\nSyzbot reported a OOB read bug:\n\nBUG: KASAN: slab-out-of-bounds in indx_insert_into_buffer+0xaa3/0x13b0\nfs/ntfs3/index.c:1755\nRead of size 17168 at addr ffff8880255e06c0 by task syz-executor308/3630\n\nCall Trace:\n \u003cTASK\u003e\n memmove+0x25/0x60 mm/kasan/shadow.c:54\n indx_insert_into_buffer+0xaa3/0x13b0 fs/ntfs3/index.c:1755\n indx_insert_entry+0x446/0x6b0 fs/ntfs3/index.c:1863\n ntfs_create_inode+0x1d3f/0x35c0 fs/ntfs3/inode.c:1548\n ntfs_create+0x3e/0x60 fs/ntfs3/namei.c:100\n lookup_open fs/namei.c:3413 [inline]\n\nIf the member struct INDEX_BUFFER *index of struct indx_node is\nincorrect, that is, the value of __le32 used is greater than the value\nof __le32 total in struct INDEX_HDR. Therefore, OOB read occurs when\nmemmove is called in indx_insert_into_buffer().\nFix this by adding a check in hdr_find_e()."
        }
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              "value": "AV:L - The vulnerability is triggered by mounting a crafted NTFS3 image and then performing an ordinary directory operation (create/mkdir/rename) on it, which is purely local \u2014 syscall/VFS access plus a block device or loop-backed image. No network-facing service parses this data.\nAC:L - The attacker fully authors the on-disk INDEX_ROOT that supplies the oversized `to_move`, so the overflow is deterministic and repeatable with no race, timing window, or uncontrolled memory-layout dependency.\nPR:L - Once the volume is mounted, the vulnerable path (`ntfs_create`/`ntfs_mkdir`/rename \u2192 `indx_insert_entry`) is reachable by any unprivileged user with write access to a directory, and on desktop/kiosk/automotive systems udisks2 or systemd automount lets an ordinary local-session user mount their own crafted NTFS media without additional privilege.\nUI:N - The attacker performs both steps \u2014 supplying/mounting the crafted image via automount and issuing the file-creation syscall \u2014 with no action required from any other user; this matches the established scoring for the sibling ntfs3 crafted-image CVEs.\nS:U - The corruption is confined to kernel slab memory within the same security authority; there is no VM, IOMMU, or sandbox boundary crossed.\nC:H - The `memmove()` in `indx_insert_into_buffer()` reads up to ~17 KB of adjacent kernel slab data (heap pointers, other objects) into the index buffer, which `indx_write()` then persists to disk where the attacker can read it back from their own image \u2014 a direct kernel-heap disclosure primitive.\nI:H - `hdr_insert_head()` performs an unchecked `memmove`/`memcpy` past the end of the `kmalloc(1u \u003c\u003c index_bits)` index buffer with attacker-controlled length and attacker-authored entry bytes, giving a controllable slab overflow that can overwrite adjacent objects and be leveraged for arbitrary write and control-flow hijack.\nA:H - The out-of-bounds access produced a KASAN slab-out-of-bounds report and, on production kernels, corrupts adjacent slab objects and heap metadata, reliably leading to an oops or panic."
            }
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        "dateUpdated": "2026-08-05T09:16:51.916Z",
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        {
          "url": "https://git.kernel.org/stable/c/b8c44949044e5f7f864525fdffe8e95135ce9ce5"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54063",
    "datePublished": "2025-12-24T12:23:09.346Z",
    "dateReserved": "2025-12-24T12:21:05.092Z",
    "dateUpdated": "2026-08-05T09:16:51.916Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-85WW-WM3W-C8W6

CVE-2023-54063 (GCVE-0-2023-54063)

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