nvd-json-data-feeds/CVE-2024/CVE-2024-499xx/CVE-2024-49960.json

{
  "id": "CVE-2024-49960",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-10-21T18:15:17.187",
  "lastModified": "2024-11-17T15:15:18.527",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix timer use-after-free on failed mount\n\nSyzbot has found an ODEBUG bug in ext4_fill_super\n\nThe del_timer_sync function cancels the s_err_report timer,\nwhich reminds about filesystem errors daily. We should\nguarantee the timer is no longer active before kfree(sbi).\n\nWhen filesystem mounting fails, the flow goes to failed_mount3,\nwhere an error occurs when ext4_stop_mmpd is called, causing\na read I/O failure. This triggers the ext4_handle_error function\nthat ultimately re-arms the timer,\nleaving the s_err_report timer active before kfree(sbi) is called.\n\nFix the issue by canceling the s_err_report timer after calling ext4_stop_mmpd."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ext4: fix timer use-after-free on failed mount Syzbot ha encontrado un error ODEBUG en ext4_fill_super La funci\u00f3n del_timer_sync cancela el temporizador s_err_report, que recuerda los errores del sistema de archivos a diario. Debemos garantizar que el temporizador ya no est\u00e9 activo antes de kfree(sbi). Cuando falla el montaje del sistema de archivos, el flujo va a failed_mount3, donde ocurre un error cuando se llama a ext4_stop_mmpd, lo que causa un error de E/S de lectura. Esto activa la funci\u00f3n ext4_handle_error que, en \u00faltima instancia, vuelve a armar el temporizador, dejando el temporizador s_err_report activo antes de que se llame a kfree(sbi). Solucione el problema cancelando el temporizador s_err_report despu\u00e9s de llamar a ext4_stop_mmpd."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "6.6.55",
              "matchCriteriaId": "8B527B5F-BDDA-424E-932E-16FCAAB575E2"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.7",
              "versionEndExcluding": "6.10.14",
              "matchCriteriaId": "4C16BCE0-FFA0-4599-BE0A-1FD65101C021"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.11",
              "versionEndExcluding": "6.11.3",
              "matchCriteriaId": "54D9C704-D679-41A7-9C40-10A6B1E7FFE9"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0ce160c5bdb67081a62293028dc85758a8efb22a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/9203817ba46ebba7c865c8de2aba399537b6e891",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/b85569585d0154d4db1e4f9e3e6a4731d407feb0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/cf3196e5e2f36cd80dab91ffae402e13935724bc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fa78fb51d396f4f2f80f8e96a3b1516f394258be",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    }
  ]
}