CVE-2023-52941 (GCVE-0-2023-52941)
Vulnerability from cvelistv5
Published
2025-03-27 16:37
Modified
2025-05-04 12:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: can: isotp: split tx timer into transmission and timeout The timer for the transmission of isotp PDUs formerly had two functions: 1. send two consecutive frames with a given time gap 2. monitor the timeouts for flow control frames and the echo frames This led to larger txstate checks and potentially to a problem discovered by syzbot which enabled the panic_on_warn feature while testing. The former 'txtimer' function is split into 'txfrtimer' and 'txtimer' to handle the two above functionalities with separate timer callbacks. The two simplified timers now run in one-shot mode and make the state transitions (especially with isotp_rcv_echo) better understandable.
References
Impacted products
Vendor Product Version
Linux Linux Version: 866337865f3747c68a3e7bb837611e39cec1ecd6
Version: 866337865f3747c68a3e7bb837611e39cec1ecd6
Version: 3cb476cf834edca47f4470c276feb0f519401fb7
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/can/isotp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cae4c9bc35f72af5d4a079bb9d9fd62c4088a411",
              "status": "affected",
              "version": "866337865f3747c68a3e7bb837611e39cec1ecd6",
              "versionType": "git"
            },
            {
              "lessThan": "4f027cba8216f42a18b544842efab134f8b1f9f4",
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              "versionType": "git"
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              "version": "3cb476cf834edca47f4470c276feb0f519401fb7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/can/isotp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.11",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.2",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.0.9",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: isotp: split tx timer into transmission and timeout\n\nThe timer for the transmission of isotp PDUs formerly had two functions:\n1. send two consecutive frames with a given time gap\n2. monitor the timeouts for flow control frames and the echo frames\n\nThis led to larger txstate checks and potentially to a problem discovered\nby syzbot which enabled the panic_on_warn feature while testing.\n\nThe former \u0027txtimer\u0027 function is split into \u0027txfrtimer\u0027 and \u0027txtimer\u0027\nto handle the two above functionalities with separate timer callbacks.\n\nThe two simplified timers now run in one-shot mode and make the state\ntransitions (especially with isotp_rcv_echo) better understandable."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T12:49:55.905Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cae4c9bc35f72af5d4a079bb9d9fd62c4088a411"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f027cba8216f42a18b544842efab134f8b1f9f4"
        }
      ],
      "title": "can: isotp: split tx timer into transmission and timeout",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52941",
    "datePublished": "2025-03-27T16:37:19.469Z",
    "dateReserved": "2024-08-21T06:07:11.022Z",
    "dateUpdated": "2025-05-04T12:49:55.905Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-52941\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-03-27T17:15:44.043\",\"lastModified\":\"2025-03-28T18:11:49.747\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: isotp: split tx timer into transmission and timeout\\n\\nThe timer for the transmission of isotp PDUs formerly had two functions:\\n1. send two consecutive frames with a given time gap\\n2. monitor the timeouts for flow control frames and the echo frames\\n\\nThis led to larger txstate checks and potentially to a problem discovered\\nby syzbot which enabled the panic_on_warn feature while testing.\\n\\nThe former \u0027txtimer\u0027 function is split into \u0027txfrtimer\u0027 and \u0027txtimer\u0027\\nto handle the two above functionalities with separate timer callbacks.\\n\\nThe two simplified timers now run in one-shot mode and make the state\\ntransitions (especially with isotp_rcv_echo) better understandable.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: isotp: dividir el temporizador de transmisi\u00f3n en transmisi\u00f3n y tiempo de espera El temporizador para la transmisi\u00f3n de PDU isotp anteriormente ten\u00eda dos funciones: 1. enviar dos tramas consecutivas con un intervalo de tiempo determinado 2. supervisar los tiempos de espera para las tramas de control de flujo y las tramas de eco Esto llev\u00f3 a comprobaciones de txstate m\u00e1s grandes y potencialmente a un problema descubierto por syzbot que habilit\u00f3 la caracter\u00edstica panic_on_warn durante las pruebas. La antigua funci\u00f3n \u0027txtimer\u0027 se divide en \u0027txfrtimer\u0027 y \u0027txtimer\u0027 para manejar las dos funcionalidades anteriores con devoluciones de llamadas de temporizador independientes. Los dos temporizadores simplificados ahora se ejecutan en modo de una sola vez y hacen que las transiciones de estado (especialmente con isotp_rcv_echo) sean mejor comprensibles.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4f027cba8216f42a18b544842efab134f8b1f9f4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cae4c9bc35f72af5d4a079bb9d9fd62c4088a411\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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