CVE-2023-54063

Estado: AplazadaAlta (7.8)—

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:

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().

Detalles técnicos trazas, registros y código del informe original

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]

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.20%
Percentil entre todas las CVEs puntuadas: 8
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1005 Data from Local Systemcollection75 %

Vulnerabilidad local sin interacción: AV:L/PR:L/UI:N. OOB read en kernel NTFS3 permite lectura de memoria del sistema de archivos (T1005) con privilegios de usuario.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence Program Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software Data Loss Prevention

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2023-54063",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "lessThan": "cd7e1d67924081717c5c96ead758a1a77867689a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "lessThan": "17048287ac79abd33b275ac3b5738285d406481b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "lessThan": "a7e5dba10ba1402dd6c2f961a70320770865c4a5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "lessThan": "4bf3b564e27a518f158a83d5e1a50064ed6136a0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82cae269cfa953032fbb8980a7d554d60fb00b17",
              "lessThan": "b8c44949044e5f7f864525fdffe8e95135ce9ce5",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/ntfs3/index.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.111",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.28",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2.15",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "status": "unaffected",
              "version": "6.3.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "status": "unaffected",
              "version": "6.4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/ntfs3/index.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:08.117",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/17048287ac79abd33b275ac3b5738285d406481b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4bf3b564e27a518f158a83d5e1a50064ed6136a0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a7e5dba10ba1402dd6c2f961a70320770865c4a5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b8c44949044e5f7f864525fdffe8e95135ce9ce5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cd7e1d67924081717c5c96ead758a1a77867689a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "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 <TASK>\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()."
    }
  ],
  "lastModified": "2026-08-04T10:19:26.960",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}