Vulnerability-Lookup

GHSA-2CW3-CW9W-9WW5

Vulnerability from github – Published: 2025-10-22 18:30 – Updated: 2025-10-22 18:30

Details

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.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49659"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:40Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-2cw3-cw9w-9ww5",
  "modified": "2025-10-22T18:30:32Z",
  "published": "2025-10-22T18:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49659"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2a2914a5bd7f38efe55a8372178146de82e0bce9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c3333693f07313f5f0145a922f14a7d3c0f4f21"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7333f79888497bfd75dcd02a94eaf836dd1042c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49659 (GCVE-0-2022-49659)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2026-05-11 19:04

Title

can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/c7333f79888497bfd…
https://git.kernel.org/stable/c/2a2914a5bd7f38efe…
https://git.kernel.org/stable/c/4c3333693f07313f5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1be37d3b0414e3db47f6fcba6c16286bbae0cb65 , < c7333f79888497bfd75dcd02a94eaf836dd1042c (git) Affected: 1be37d3b0414e3db47f6fcba6c16286bbae0cb65 , < 2a2914a5bd7f38efe55a8372178146de82e0bce9 (git) Affected: 1be37d3b0414e3db47f6fcba6c16286bbae0cb65 , < 4c3333693f07313f5f0145a922f14a7d3c0f4f21 (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.54 , ≤ 5.15.* (semver) Unaffected: 5.18.11 , ≤ 5.18.* (semver) Unaffected: 5.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/m_can/m_can.c"
          ],
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          "versions": [
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            },
            {
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              "status": "affected",
              "version": "1be37d3b0414e3db47f6fcba6c16286bbae0cb65",
              "versionType": "git"
            },
            {
              "lessThan": "4c3333693f07313f5f0145a922f14a7d3c0f4f21",
              "status": "affected",
              "version": "1be37d3b0414e3db47f6fcba6c16286bbae0cb65",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "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": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "version": "5.15.54",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "5.18.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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                  "versionStartIncluding": "5.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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        }
      ],
      "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": "2026-05-11T19:04:13.638Z",
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          "url": "https://git.kernel.org/stable/c/4c3333693f07313f5f0145a922f14a7d3c0f4f21"
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      "title": "can: m_can: m_can_{read_fifo,echo_tx_event}(): shift timestamp to full 32 bits",
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    "dateReserved": "2025-02-26T02:21:30.434Z",
    "dateUpdated": "2026-05-11T19:04:13.638Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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