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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f027cba8216f42a18b544842efab134f8b1f9f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cae4c9bc35f72af5d4a079bb9d9fd62c4088a411
Impacted products
Vendor Product Version
Linux Linux Version: 866337865f3747c68a3e7bb837611e39cec1ecd6
Version: 866337865f3747c68a3e7bb837611e39cec1ecd6
Version: 3cb476cf834edca47f4470c276feb0f519401fb7
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   Linux Linux Version: 6.1
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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/can/isotp.c"
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          "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"
      },
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        {
          "url": "https://git.kernel.org/stable/c/4f027cba8216f42a18b544842efab134f8b1f9f4"
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      ],
      "title": "can: isotp: split tx timer into transmission and timeout",
      "x_generator": {
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  },
  "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"
  },
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  }
}


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