CVE-2024-46706 (GCVE-0-2024-46706)

Vulnerability from cvelistv5 – Published: 2024-09-13 06:27 – Updated: 2026-05-11 20:34
VLAI
Title
tty: serial: fsl_lpuart: mark last busy before uart_add_one_port
Summary
In the Linux kernel, the following vulnerability has been resolved: tty: serial: fsl_lpuart: mark last busy before uart_add_one_port With "earlycon initcall_debug=1 loglevel=8" in bootargs, kernel sometimes boot hang. It is because normal console still is not ready, but runtime suspend is called, so early console putchar will hang in waiting TRDE set in UARTSTAT. The lpuart driver has auto suspend delay set to 3000ms, but during uart_add_one_port, a child device serial ctrl will added and probed with its pm runtime enabled(see serial_ctrl.c). The runtime suspend call path is: device_add |-> bus_probe_device |->device_initial_probe |->__device_attach |-> pm_runtime_get_sync(dev->parent); |-> pm_request_idle(dev); |-> pm_runtime_put(dev->parent); So in the end, before normal console ready, the lpuart get runtime suspended. And earlycon putchar will hang. To address the issue, mark last busy just after pm_runtime_enable, three seconds is long enough to switch from bootconsole to normal console.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 43543e6f539b3e646348c253059f75e27d63c94d , < 8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68 (git)
Affected: 43543e6f539b3e646348c253059f75e27d63c94d , < 3ecf625d4acb71d726bc0b49403cf68388b3d58d (git)
Affected: 43543e6f539b3e646348c253059f75e27d63c94d , < dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c (git)
Create a notification for this product.
Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.6.48 , ≤ 6.6.* (semver)
Unaffected: 6.10.7 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-46706",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T15:02:49.399006Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-29T15:03:05.411Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/serial/fsl_lpuart.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68",
              "status": "affected",
              "version": "43543e6f539b3e646348c253059f75e27d63c94d",
              "versionType": "git"
            },
            {
              "lessThan": "3ecf625d4acb71d726bc0b49403cf68388b3d58d",
              "status": "affected",
              "version": "43543e6f539b3e646348c253059f75e27d63c94d",
              "versionType": "git"
            },
            {
              "lessThan": "dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c",
              "status": "affected",
              "version": "43543e6f539b3e646348c253059f75e27d63c94d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/tty/serial/fsl_lpuart.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.48",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.48",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.7",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: serial: fsl_lpuart: mark last busy before uart_add_one_port\n\nWith \"earlycon initcall_debug=1 loglevel=8\" in bootargs, kernel\nsometimes boot hang. It is because normal console still is not ready,\nbut runtime suspend is called, so early console putchar will hang\nin waiting TRDE set in UARTSTAT.\n\nThe lpuart driver has auto suspend delay set to 3000ms, but during\nuart_add_one_port, a child device serial ctrl will added and probed with\nits pm runtime enabled(see serial_ctrl.c).\nThe runtime suspend call path is:\ndevice_add\n     |-\u003e bus_probe_device\n           |-\u003edevice_initial_probe\n\t           |-\u003e__device_attach\n                         |-\u003e pm_runtime_get_sync(dev-\u003eparent);\n\t\t\t |-\u003e pm_request_idle(dev);\n\t\t\t |-\u003e pm_runtime_put(dev-\u003eparent);\n\nSo in the end, before normal console ready, the lpuart get runtime\nsuspended. And earlycon putchar will hang.\n\nTo address the issue, mark last busy just after pm_runtime_enable,\nthree seconds is long enough to switch from bootconsole to normal\nconsole."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T20:34:48.839Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ecf625d4acb71d726bc0b49403cf68388b3d58d"
        },
        {
          "url": "https://git.kernel.org/stable/c/dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c"
        }
      ],
      "title": "tty: serial: fsl_lpuart: mark last busy before uart_add_one_port",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-46706",
    "datePublished": "2024-09-13T06:27:33.085Z",
    "dateReserved": "2024-09-11T15:12:18.252Z",
    "dateUpdated": "2026-05-11T20:34:48.839Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-46706",
      "date": "2026-07-18",
      "epss": "0.00215",
      "percentile": "0.11927"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.2\", \"versionEndExcluding\": \"6.6.48\", \"matchCriteriaId\": \"9DE9201A-CE6B-4726-BABB-8265EA0F8AE4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"6.7\", \"versionEndExcluding\": \"6.10.7\", \"matchCriteriaId\": \"D2AFDFD1-D95A-4EB7-843B-5E7659518B67\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\", \"matchCriteriaId\": \"8B3CE743-2126-47A3-8B7C-822B502CF119\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\", \"matchCriteriaId\": \"4DEB27E7-30AA-45CC-8934-B89263EF3551\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\", \"matchCriteriaId\": \"E0005AEF-856E-47EB-BFE4-90C46899394D\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntty: serial: fsl_lpuart: mark last busy before uart_add_one_port\\n\\nWith \\\"earlycon initcall_debug=1 loglevel=8\\\" in bootargs, kernel\\nsometimes boot hang. It is because normal console still is not ready,\\nbut runtime suspend is called, so early console putchar will hang\\nin waiting TRDE set in UARTSTAT.\\n\\nThe lpuart driver has auto suspend delay set to 3000ms, but during\\nuart_add_one_port, a child device serial ctrl will added and probed with\\nits pm runtime enabled(see serial_ctrl.c).\\nThe runtime suspend call path is:\\ndevice_add\\n     |-\u003e bus_probe_device\\n           |-\u003edevice_initial_probe\\n\\t           |-\u003e__device_attach\\n                         |-\u003e pm_runtime_get_sync(dev-\u003eparent);\\n\\t\\t\\t |-\u003e pm_request_idle(dev);\\n\\t\\t\\t |-\u003e pm_runtime_put(dev-\u003eparent);\\n\\nSo in the end, before normal console ready, the lpuart get runtime\\nsuspended. And earlycon putchar will hang.\\n\\nTo address the issue, mark last busy just after pm_runtime_enable,\\nthree seconds is long enough to switch from bootconsole to normal\\nconsole.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: serial: fsl_lpuart: marcar el \\u00faltimo ocupado antes de uart_add_one_port Con \\\"earlycon initcall_debug=1 loglevel=8\\\" en bootargs, el kernel a veces se bloquea al iniciar. Esto se debe a que la consola normal a\\u00fan no est\\u00e1 lista, pero se llama a la suspensi\\u00f3n en tiempo de ejecuci\\u00f3n, por lo que la consola temprana putchar se bloquear\\u00e1 esperando que se establezca TRDE en UARTSTAT. El controlador lpuart tiene un retraso de suspensi\\u00f3n autom\\u00e1tica establecido en 3000 ms, pero durante uart_add_one_port, se agregar\\u00e1 un dispositivo secundario serial ctrl y se sondear\\u00e1 con su tiempo de ejecuci\\u00f3n pm habilitado (consulte serial_ctrl.c). La ruta de la llamada a la suspensi\\u00f3n en tiempo de ejecuci\\u00f3n es: device_add |-\u0026gt; bus_probe_device |-\u0026gt;device_initial_probe |-\u0026gt;__device_attach |-\u0026gt; pm_runtime_get_sync(dev-\u0026gt;parent); |-\u0026gt; pm_request_idle(dev); |-\u0026gt; pm_runtime_put(dev-\u0026gt;parent); Por lo tanto, al final, antes de que la consola normal est\\u00e9 lista, el tiempo de ejecuci\\u00f3n de lpuart get se suspende. Y el putchar de earlycon se bloquea. Para solucionar el problema, marque la \\u00faltima vez que est\\u00e1 ocupado justo despu\\u00e9s de pm_runtime_enable; tres segundos son suficientes para cambiar de la consola de arranque a la consola normal.\"}]",
      "id": "CVE-2024-46706",
      "lastModified": "2024-09-19T17:51:07.670",
      "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:N/I:N/A:H\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2024-09-13T07:15:05.560",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/3ecf625d4acb71d726bc0b49403cf68388b3d58d\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}, {\"url\": \"https://git.kernel.org/stable/c/dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Analyzed",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2026-02-21T01:35:29.000Z",
      "cve": "CVE-2024-46706",
      "id": "msrc_CVE-2024-46706",
      "initial_release_date": "2024-09-01T07:00:00.000Z",
      "product_status:fixed": "2",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "tty: serial: fsl_lpuart: mark last busy before uart_add_one_port",
      "url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-46706.json",
      "version": "2"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-46706\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-13T07:15:05.560\",\"lastModified\":\"2026-06-17T07:55:46.013\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntty: serial: fsl_lpuart: mark last busy before uart_add_one_port\\n\\nWith \\\"earlycon initcall_debug=1 loglevel=8\\\" in bootargs, kernel\\nsometimes boot hang. It is because normal console still is not ready,\\nbut runtime suspend is called, so early console putchar will hang\\nin waiting TRDE set in UARTSTAT.\\n\\nThe lpuart driver has auto suspend delay set to 3000ms, but during\\nuart_add_one_port, a child device serial ctrl will added and probed with\\nits pm runtime enabled(see serial_ctrl.c).\\nThe runtime suspend call path is:\\ndevice_add\\n     |-\u003e bus_probe_device\\n           |-\u003edevice_initial_probe\\n\\t           |-\u003e__device_attach\\n                         |-\u003e pm_runtime_get_sync(dev-\u003eparent);\\n\\t\\t\\t |-\u003e pm_request_idle(dev);\\n\\t\\t\\t |-\u003e pm_runtime_put(dev-\u003eparent);\\n\\nSo in the end, before normal console ready, the lpuart get runtime\\nsuspended. And earlycon putchar will hang.\\n\\nTo address the issue, mark last busy just after pm_runtime_enable,\\nthree seconds is long enough to switch from bootconsole to normal\\nconsole.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: serial: fsl_lpuart: marcar el \u00faltimo ocupado antes de uart_add_one_port Con \\\"earlycon initcall_debug=1 loglevel=8\\\" en bootargs, el kernel a veces se bloquea al iniciar. Esto se debe a que la consola normal a\u00fan no est\u00e1 lista, pero se llama a la suspensi\u00f3n en tiempo de ejecuci\u00f3n, por lo que la consola temprana putchar se bloquear\u00e1 esperando que se establezca TRDE en UARTSTAT. El controlador lpuart tiene un retraso de suspensi\u00f3n autom\u00e1tica establecido en 3000 ms, pero durante uart_add_one_port, se agregar\u00e1 un dispositivo secundario serial ctrl y se sondear\u00e1 con su tiempo de ejecuci\u00f3n pm habilitado (consulte serial_ctrl.c). La ruta de la llamada a la suspensi\u00f3n en tiempo de ejecuci\u00f3n es: device_add |-\u0026gt; bus_probe_device |-\u0026gt;device_initial_probe |-\u0026gt;__device_attach |-\u0026gt; pm_runtime_get_sync(dev-\u0026gt;parent); |-\u0026gt; pm_request_idle(dev); |-\u0026gt; pm_runtime_put(dev-\u0026gt;parent); Por lo tanto, al final, antes de que la consola normal est\u00e9 lista, el tiempo de ejecuci\u00f3n de lpuart get se suspende. Y el putchar de earlycon se bloquea. Para solucionar el problema, marque la \u00faltima vez que est\u00e1 ocupado justo despu\u00e9s de pm_runtime_enable; tres segundos son suficientes para cambiar de la consola de arranque a la consola normal.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/tty/serial/fsl_lpuart.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"43543e6f539b3e646348c253059f75e27d63c94d\",\"lessThan\":\"8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43543e6f539b3e646348c253059f75e27d63c94d\",\"lessThan\":\"3ecf625d4acb71d726bc0b49403cf68388b3d58d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"43543e6f539b3e646348c253059f75e27d63c94d\",\"lessThan\":\"dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/tty/serial/fsl_lpuart.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.48\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.7\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"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:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-29T15:02:49.399006Z\",\"id\":\"CVE-2024-46706\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.48\",\"matchCriteriaId\":\"9DE9201A-CE6B-4726-BABB-8265EA0F8AE4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.7\",\"matchCriteriaId\":\"D2AFDFD1-D95A-4EB7-843B-5E7659518B67\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3ecf625d4acb71d726bc0b49403cf68388b3d58d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-02-02T11:06:02+00:00",
      "cve": "CVE-2024-46706",
      "id": "CVE-2024-46706",
      "initial_release_date": "2024-09-13T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: tty: serial: fsl_lpuart: mark last busy before uart_add_one_port",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-46706.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46706\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T15:02:49.399006Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T15:02:53.727Z\"}}], \"cna\": {\"title\": \"tty: serial: fsl_lpuart: mark last busy before uart_add_one_port\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"43543e6f539b3e646348c253059f75e27d63c94d\", \"lessThan\": \"8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"43543e6f539b3e646348c253059f75e27d63c94d\", \"lessThan\": \"3ecf625d4acb71d726bc0b49403cf68388b3d58d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"43543e6f539b3e646348c253059f75e27d63c94d\", \"lessThan\": \"dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/tty/serial/fsl_lpuart.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.2\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.6.48\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/tty/serial/fsl_lpuart.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8eb92cfca6c2c5a15ab1773f3d18ab8d8f7dbb68\"}, {\"url\": \"https://git.kernel.org/stable/c/3ecf625d4acb71d726bc0b49403cf68388b3d58d\"}, {\"url\": \"https://git.kernel.org/stable/c/dc98d76a15bc29a9a4e76f2f65f39f3e590fb15c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntty: serial: fsl_lpuart: mark last busy before uart_add_one_port\\n\\nWith \\\"earlycon initcall_debug=1 loglevel=8\\\" in bootargs, kernel\\nsometimes boot hang. It is because normal console still is not ready,\\nbut runtime suspend is called, so early console putchar will hang\\nin waiting TRDE set in UARTSTAT.\\n\\nThe lpuart driver has auto suspend delay set to 3000ms, but during\\nuart_add_one_port, a child device serial ctrl will added and probed with\\nits pm runtime enabled(see serial_ctrl.c).\\nThe runtime suspend call path is:\\ndevice_add\\n     |-\u003e bus_probe_device\\n           |-\u003edevice_initial_probe\\n\\t           |-\u003e__device_attach\\n                         |-\u003e pm_runtime_get_sync(dev-\u003eparent);\\n\\t\\t\\t |-\u003e pm_request_idle(dev);\\n\\t\\t\\t |-\u003e pm_runtime_put(dev-\u003eparent);\\n\\nSo in the end, before normal console ready, the lpuart get runtime\\nsuspended. And earlycon putchar will hang.\\n\\nTo address the issue, mark last busy just after pm_runtime_enable,\\nthree seconds is long enough to switch from bootconsole to normal\\nconsole.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.48\", \"versionStartIncluding\": \"6.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.7\", \"versionStartIncluding\": \"6.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"6.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:32:21.349Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-46706\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:32:21.349Z\", \"dateReserved\": \"2024-09-11T15:12:18.252Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-13T06:27:33.085Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.