CVE-2023-52629
Vulnerability from cvelistv5
Published
2024-03-29 09:13
Modified
2024-11-04 14:50
Severity ?
8.4 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
sh: push-switch: Reorder cleanup operations to avoid use-after-free bug
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

{
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            "cpes": [
              "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*"
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            "defaultStatus": "unknown",
            "product": "linux_kernel",
            "vendor": "linux",
            "versions": [
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                "lessThan": "610dbd8ac271",
                "status": "affected",
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                "status": "affected",
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              },
              {
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                "version": "2.6.20"
              },
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                "lessThan": "2.6.20",
                "status": "unaffected",
                "version": "0",
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              },
              {
                "lessThanOrEqual": "6.6",
                "status": "unaffected",
                "version": "6.54",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "6.6",
                "status": "unaffected",
                "version": "0",
                "versionType": "custom"
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            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 8.4,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-52629",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-04-01T17:41:22.649775Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-07-18T13:39:55.629Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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        "providerMetadata": {
          "dateUpdated": "2024-08-02T23:03:21.222Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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            "url": "https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de"
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              "x_transferred"
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            "url": "https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/sh/drivers/push-switch.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "status": "affected",
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              "status": "affected",
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              "versionType": "git"
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        },
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.20"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.5.*",
              "status": "unaffected",
              "version": "6.5.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsh: push-switch: Reorder cleanup operations to avoid use-after-free bug\n\nThe original code puts flush_work() before timer_shutdown_sync()\nin switch_drv_remove(). Although we use flush_work() to stop\nthe worker, it could be rescheduled in switch_timer(). As a result,\na use-after-free bug can occur. The details are shown below:\n\n      (cpu 0)                    |      (cpu 1)\nswitch_drv_remove()              |\n flush_work()                    |\n  ...                            |  switch_timer // timer\n                                 |   schedule_work(\u0026psw-\u003ework)\n timer_shutdown_sync()           |\n ...                             |  switch_work_handler // worker\n kfree(psw) // free              |\n                                 |   psw-\u003estate = 0 // use\n\nThis patch puts timer_shutdown_sync() before flush_work() to\nmitigate the bugs. As a result, the worker and timer will be\nstopped safely before the deallocate operations."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-11-04T14:50:03.596Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de"
        },
        {
          "url": "https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65"
        }
      ],
      "title": "sh: push-switch: Reorder cleanup operations to avoid use-after-free bug",
      "x_generator": {
        "engine": "bippy-9e1c9544281a"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52629",
    "datePublished": "2024-03-29T09:13:45.848Z",
    "dateReserved": "2024-03-06T09:52:12.092Z",
    "dateUpdated": "2024-11-04T14:50:03.596Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52629\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-03-29T10:15:09.327\",\"lastModified\":\"2024-08-01T13:45:41.290\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nsh: push-switch: Reorder cleanup operations to avoid use-after-free bug\\n\\nThe original code puts flush_work() before timer_shutdown_sync()\\nin switch_drv_remove(). Although we use flush_work() to stop\\nthe worker, it could be rescheduled in switch_timer(). As a result,\\na use-after-free bug can occur. The details are shown below:\\n\\n      (cpu 0)                    |      (cpu 1)\\nswitch_drv_remove()              |\\n flush_work()                    |\\n  ...                            |  switch_timer // timer\\n                                 |   schedule_work(\u0026psw-\u003ework)\\n timer_shutdown_sync()           |\\n ...                             |  switch_work_handler // worker\\n kfree(psw) // free              |\\n                                 |   psw-\u003estate = 0 // use\\n\\nThis patch puts timer_shutdown_sync() before flush_work() to\\nmitigate the bugs. As a result, the worker and timer will be\\nstopped safely before the deallocate operations.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sh: push-switch: reordenar las operaciones de limpieza para evitar el error de use after free. El c\u00f3digo original coloca Flush_work() antes de timer_shutdown_sync() en switch_drv_remove(). Aunque usamos Flush_work() para detener al trabajador, podr\u00eda reprogramarse en switch_timer(). Como resultado, puede ocurrir un error de use after free. Los detalles se muestran a continuaci\u00f3n: (cpu 0) | (procesador 1) switch_drv_remove() | descarga_trabajo() | ... | switch_timer // temporizador | Schedule_work(\u0026amp;psw-\u0026gt;trabajo) timer_shutdown_sync() | ... | switch_work_handler // trabajador kfree(psw) // gratis | | psw-\u0026gt;state = 0 // uso Este parche coloca timer_shutdown_sync() antes de Flush_work() para mitigar los errores. Como resultado, el trabajador y el temporizador se detendr\u00e1n de forma segura antes de las operaciones de desasignaci\u00f3n.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\",\"baseScore\":8.4,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":2.5,\"impactScore\":5.9}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/246f80a0b17f8f582b2c0996db02998239057c65\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/610dbd8ac271aa36080aac50b928d700ee3fe4de\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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