CVE-2023-53301

Estado: AnalizadaAlta (7.1)—

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

f2fs: fix kernel crash due to null io->bio

We should return when io->bio is null before doing anything. Otherwise, panic.

Detalles técnicos trazas, registros y código del informe original

BUG: kernel NULL pointer dereference, address: 0000000000000010
RIP: 0010:__submit_merged_write_cond+0x164/0x240 [f2fs]
Call Trace:
 <TASK>
 f2fs_submit_merged_write+0x1d/0x30 [f2fs]
 commit_checkpoint+0x110/0x1e0 [f2fs]
 f2fs_write_checkpoint+0x9f7/0xf00 [f2fs]
 ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]
 __checkpoint_and_complete_reqs+0x84/0x190 [f2fs]
 ? preempt_count_add+0x82/0xc0
 ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]
 issue_checkpoint_thread+0x4c/0xf0 [f2fs]
 ? __pfx_autoremove_wake_function+0x10/0x10
 kthread+0xff/0x130
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x2c/0x50
 </TASK>

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 7.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.15%
Percentil entre todas las CVEs puntuadas: 4
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 escalation75 %
Impacto principalT1499.004 Application or System Exploitationimpact70 %
Impacto secundarioT1561.002 Disk Structure Wipeimpact60 %

Null pointer dereference con acceso local (AV:L) y privilegios de usuario (PR:L) causa DoS y corrupción del sistema de ficheros f2fs. El crash del kernel permite denegación de servicio.

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 Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

NVD-CWE-noinfo

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2023-53301",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "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": "64bf0eef0171912f7c2f3ea30ee6ad7a2ad0a511",
              "lessThan": "83dbb9a1bd5ef2eea73275906fc50b2fdda39cd5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "64bf0eef0171912f7c2f3ea30ee6ad7a2ad0a511",
              "lessThan": "eb52f13c6093ac761dbeaa459c810fc0253209fc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "64bf0eef0171912f7c2f3ea30ee6ad7a2ad0a511",
              "lessThan": "267c159f9c7bcb7009dae16889b880c5ed8759a8",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/f2fs/data.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.18",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/f2fs/data.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-09-16T08:15:39.517",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/267c159f9c7bcb7009dae16889b880c5ed8759a8",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/83dbb9a1bd5ef2eea73275906fc50b2fdda39cd5",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/eb52f13c6093ac761dbeaa459c810fc0253209fc",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix kernel crash due to null io->bio\n\nWe should return when io->bio is null before doing anything. Otherwise, panic.\n\nBUG: kernel NULL pointer dereference, address: 0000000000000010\nRIP: 0010:__submit_merged_write_cond+0x164/0x240 [f2fs]\nCall Trace:\n <TASK>\n f2fs_submit_merged_write+0x1d/0x30 [f2fs]\n commit_checkpoint+0x110/0x1e0 [f2fs]\n f2fs_write_checkpoint+0x9f7/0xf00 [f2fs]\n ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]\n __checkpoint_and_complete_reqs+0x84/0x190 [f2fs]\n ? preempt_count_add+0x82/0xc0\n ? __pfx_issue_checkpoint_thread+0x10/0x10 [f2fs]\n issue_checkpoint_thread+0x4c/0xf0 [f2fs]\n ? __pfx_autoremove_wake_function+0x10/0x10\n kthread+0xff/0x130\n ? __pfx_kthread+0x10/0x10\n ret_from_fork+0x2c/0x50\n </TASK>"
    }
  ],
  "lastModified": "2026-06-17T06:44:47.310",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E9650E3A-ACE7-4B74-ABC0-4EACE7EEB78E",
              "versionEndExcluding": "6.1.16",
              "versionStartIncluding": "5.18"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "88C67289-22AD-4CA9-B202-5F5A80E5BA4B",
              "versionEndExcluding": "6.2.3",
              "versionStartIncluding": "6.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}