CVE-2023-54132

Estado: AplazadaAlta (7.8)—

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

erofs: stop parsing non-compact HEAD index if clusterofs is invalid

Syzbot generated a crafted image [1] with a non-compact HEAD index of clusterofs 33024 while valid numbers should be 0 ~ lclustersize-1, which causes the following unexpected behavior as below:

Note that normal images or images using compact indexes are not impacted. Let's fix this now.

[1] https://lore.kernel.org/r/000000000000ec75b005ee97fbaa@google.com

Detalles técnicos trazas, registros y código del informe original

 BUG: unable to handle page fault for address: fffff52101a3fff9
 #PF: supervisor read access in kernel mode
 #PF: error_code(0x0000) - not-present page
 PGD 23ffed067 P4D 23ffed067 PUD 0
 Oops: 0000 [#1] PREEMPT SMP KASAN
 CPU: 1 PID: 4398 Comm: kworker/u5:1 Not tainted 6.3.0-rc6-syzkaller-g09a9639e56c0 #0
 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
 Workqueue: erofs_worker z_erofs_decompressqueue_work
 RIP: 0010:z_erofs_decompress_queue+0xb7e/0x2b40
 ...
 Call Trace:
  <TASK>
  z_erofs_decompressqueue_work+0x99/0xe0
  process_one_work+0x8f6/0x1170
  worker_thread+0xa63/0x1210
  kthread+0x270/0x300
  ret_from_fork+0x1f/0x30

CVSS

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

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
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.

ExplotaciónT1203 Exploitation for Client Executionexecution75 %
Impacto principalT1499.004 Application or System Exploitationimpact70 %
Impacto secundarioT1068 Exploitation for Privilege Escalationprivilege escalation60 %

Requiere interacción del usuario (UI:R) para abrir una imagen EROFS manipulada; causa DoS por page fault o escalada si el kernel ejecuta código adicional ante corrupción de memoria.

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

Application Isolation and Sandboxing Exploit Protection Update Software Threat Intelligence Program Filter Network Traffic Execution 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-2023-54132",
  "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:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "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": "02827e1796b33f1794966f5c3101f8da2dfa9c1d",
              "lessThan": "880c79bdb002b9d5b6940e52c2ad3829c2178207",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "7a4579cd6e4936de107c82499c3c9ee11b63401e",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "060fecf1114ff9fcfe87953fe8c4fc5048777160",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "7ee7a86e28ce9ead7112286c388df8d254c373c6",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "f01b2894928affa3339d355608713cf3db8360b8",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "96a845419b3722869f09883319de4d55c44d9aef",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "cc4efd3dd2ac9f89143e5d881609747ecff04164",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/erofs/zmap.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.19"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.19",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.4.243",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.180",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "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/erofs/zmap.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:15.180",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/060fecf1114ff9fcfe87953fe8c4fc5048777160",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7a4579cd6e4936de107c82499c3c9ee11b63401e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7ee7a86e28ce9ead7112286c388df8d254c373c6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/880c79bdb002b9d5b6940e52c2ad3829c2178207",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/96a845419b3722869f09883319de4d55c44d9aef",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cc4efd3dd2ac9f89143e5d881609747ecff04164",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f01b2894928affa3339d355608713cf3db8360b8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: stop parsing non-compact HEAD index if clusterofs is invalid\n\nSyzbot generated a crafted image [1] with a non-compact HEAD index of\nclusterofs 33024 while valid numbers should be 0 ~ lclustersize-1,\nwhich causes the following unexpected behavior as below:\n\n BUG: unable to handle page fault for address: fffff52101a3fff9\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page\n PGD 23ffed067 P4D 23ffed067 PUD 0\n Oops: 0000 [#1] PREEMPT SMP KASAN\n CPU: 1 PID: 4398 Comm: kworker/u5:1 Not tainted 6.3.0-rc6-syzkaller-g09a9639e56c0 #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023\n Workqueue: erofs_worker z_erofs_decompressqueue_work\n RIP: 0010:z_erofs_decompress_queue+0xb7e/0x2b40\n ...\n Call Trace:\n  <TASK>\n  z_erofs_decompressqueue_work+0x99/0xe0\n  process_one_work+0x8f6/0x1170\n  worker_thread+0xa63/0x1210\n  kthread+0x270/0x300\n  ret_from_fork+0x1f/0x30\n\nNote that normal images or images using compact indexes are not\nimpacted.  Let's fix this now.\n\n[1] https://lore.kernel.org/r/000000000000ec75b005ee97fbaa@google.com"
    }
  ],
  "lastModified": "2026-08-04T10:19:30.863",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}