CVE-2022-49659 (GCVE-0-2022-49659)
Vulnerability from cvelistv5
Published
2025-02-26 02:23
Modified
2025-05-04 08:42
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits In commit 1be37d3b0414 ("can: m_can: fix periph RX path: use rx-offload to ensure skbs are sent from softirq context") the RX path for peripheral devices was switched to RX-offload. Received CAN frames are pushed to RX-offload together with a timestamp. RX-offload is designed to handle overflows of the timestamp correctly, if 32 bit timestamps are provided. The timestamps of m_can core are only 16 bits wide. So this patch shifts them to full 32 bit before passing them to RX-offload.
References
Impacted products
Vendor Product Version
Linux Linux Version: 1be37d3b0414e3db47f6fcba6c16286bbae0cb65
Version: 1be37d3b0414e3db47f6fcba6c16286bbae0cb65
Version: 1be37d3b0414e3db47f6fcba6c16286bbae0cb65
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/m_can/m_can.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c7333f79888497bfd75dcd02a94eaf836dd1042c",
              "status": "affected",
              "version": "1be37d3b0414e3db47f6fcba6c16286bbae0cb65",
              "versionType": "git"
            },
            {
              "lessThan": "2a2914a5bd7f38efe55a8372178146de82e0bce9",
              "status": "affected",
              "version": "1be37d3b0414e3db47f6fcba6c16286bbae0cb65",
              "versionType": "git"
            },
            {
              "lessThan": "4c3333693f07313f5f0145a922f14a7d3c0f4f21",
              "status": "affected",
              "version": "1be37d3b0414e3db47f6fcba6c16286bbae0cb65",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/m_can/m_can.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.18.*",
              "status": "unaffected",
              "version": "5.18.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.54",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.18.11",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19",
                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits\n\nIn commit 1be37d3b0414 (\"can: m_can: fix periph RX path: use\nrx-offload to ensure skbs are sent from softirq context\") the RX path\nfor peripheral devices was switched to RX-offload.\n\nReceived CAN frames are pushed to RX-offload together with a\ntimestamp. RX-offload is designed to handle overflows of the timestamp\ncorrectly, if 32 bit timestamps are provided.\n\nThe timestamps of m_can core are only 16 bits wide. So this patch\nshifts them to full 32 bit before passing them to RX-offload."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T08:42:45.738Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/c7333f79888497bfd75dcd02a94eaf836dd1042c"
        },
        {
          "url": "https://git.kernel.org/stable/c/2a2914a5bd7f38efe55a8372178146de82e0bce9"
        },
        {
          "url": "https://git.kernel.org/stable/c/4c3333693f07313f5f0145a922f14a7d3c0f4f21"
        }
      ],
      "title": "can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49659",
    "datePublished": "2025-02-26T02:23:57.411Z",
    "dateReserved": "2025-02-26T02:21:30.434Z",
    "dateUpdated": "2025-05-04T08:42:45.738Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-49659\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-02-26T07:01:40.957\",\"lastModified\":\"2025-02-26T07:01:40.957\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncan: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits\\n\\nIn commit 1be37d3b0414 (\\\"can: m_can: fix periph RX path: use\\nrx-offload to ensure skbs are sent from softirq context\\\") the RX path\\nfor peripheral devices was switched to RX-offload.\\n\\nReceived CAN frames are pushed to RX-offload together with a\\ntimestamp. RX-offload is designed to handle overflows of the timestamp\\ncorrectly, if 32 bit timestamps are provided.\\n\\nThe timestamps of m_can core are only 16 bits wide. So this patch\\nshifts them to full 32 bit before passing them to RX-offload.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: can: m_can: m_can_{read_fifo,echo_tx_event}(): cambiar la marca de tiempo a 32 bits completos En el commit 1be37d3b0414 (\\\"can: m_can: corregir la ruta RX de los perif\u00e9ricos: usar rx-offload para garantizar que los skbs se env\u00eden desde el contexto de softirq\\\"), la ruta RX para los dispositivos perif\u00e9ricos se cambi\u00f3 a RX-offload. Los marcos CAN recibidos se env\u00edan a RX-offload junto con una marca de tiempo. RX-offload est\u00e1 dise\u00f1ado para gestionar desbordamientos de la marca de tiempo correctamente, si se proporcionan marcas de tiempo de 32 bits. Las marcas de tiempo del n\u00facleo m_can tienen solo 16 bits de ancho. Por lo tanto, este parche las cambia a 32 bits completos antes de pasarlas a RX-offload.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2a2914a5bd7f38efe55a8372178146de82e0bce9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4c3333693f07313f5f0145a922f14a7d3c0f4f21\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c7333f79888497bfd75dcd02a94eaf836dd1042c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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