Vulnerability-Lookup

GHSA-FM8J-HX94-QC39

Vulnerability from github – Published: 2026-08-15 15:30 – Updated: 2026-08-19 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

can: peak_usb: validate uCAN receive record lengths

pcan_usb_fd_decode_buf() walks uCAN records packed in one USB receive buffer.

Require each record to contain the fixed header for its type, and verify CAN payload bytes before copying them into the skb.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74455"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T13:17:50Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_usb: validate uCAN receive record lengths\n\npcan_usb_fd_decode_buf() walks uCAN records packed in one USB\nreceive buffer.\n\nRequire each record to contain the fixed header for its type, and verify\nCAN payload bytes before copying them into the skb.",
  "id": "GHSA-fm8j-hx94-qc39",
  "modified": "2026-08-19T18:32:27Z",
  "published": "2026-08-15T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74455"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2427ef427bdd78d862c7c76597bfd9eda88b81f1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/276d989cd2dd88e2b7ab2c96fd10c86836b12781"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c8f08f3641a074da40acf05baa5a18ae2739260"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6067c878e38d02a3d5c43497347e143f85c9064a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/89c92a8052698dbbd3652a77c04d02bbd74a3275"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93fcab2c6968446316bbb49548848df604d6346f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf9d787b7e1ef59be19b35abca08194772deb97e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d9c115948c3dd5fcc2d0245cec5eb76c098503c8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-74455 (GCVE-0-2026-74455)

Vulnerability from cvelistv5 – Published: 2026-08-15 12:26 – Updated: 2026-08-19 16:36

Title

can: peak_usb: validate uCAN receive record lengths

Summary

In the Linux kernel, the following vulnerability has been resolved: can: peak_usb: validate uCAN receive record lengths pcan_usb_fd_decode_buf() walks uCAN records packed in one USB receive buffer. Require each record to contain the fixed header for its type, and verify CAN payload bytes before copying them into the skb.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/276d989cd2dd88e2b…
https://git.kernel.org/stable/c/bf9d787b7e1ef59be…
https://git.kernel.org/stable/c/89c92a8052698dbbd…
https://git.kernel.org/stable/c/6067c878e38d02a3d…
https://git.kernel.org/stable/c/2c8f08f3641a074da…
https://git.kernel.org/stable/c/2427ef427bdd78d86…
https://git.kernel.org/stable/c/d9c115948c3dd5fcc…
https://git.kernel.org/stable/c/93fcab2c696844631…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < 276d989cd2dd88e2b7ab2c96fd10c86836b12781 (git) Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < bf9d787b7e1ef59be19b35abca08194772deb97e (git) Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < 89c92a8052698dbbd3652a77c04d02bbd74a3275 (git) Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < 6067c878e38d02a3d5c43497347e143f85c9064a (git) Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < 2c8f08f3641a074da40acf05baa5a18ae2739260 (git) Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < 2427ef427bdd78d862c7c76597bfd9eda88b81f1 (git) Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < d9c115948c3dd5fcc2d0245cec5eb76c098503c8 (git) Affected: 0a25e1f4f18566b750ebd3ae995af64e23111e63 , < 93fcab2c6968446316bbb49548848df604d6346f (git)
Linux	Linux	Affected: 4.0 Unaffected: 0 , < 4.0 (semver) Unaffected: 5.10.265 , ≤ 5.10.* (semver) Unaffected: 5.15.216 , ≤ 5.15.* (semver) Unaffected: 6.1.183 , ≤ 6.1.* (semver) Unaffected: 6.6.151 , ≤ 6.6.* (semver) Unaffected: 6.12.103 , ≤ 6.12.* (semver) Unaffected: 6.18.44 , ≤ 6.18.* (semver) Unaffected: 7.1.8 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/peak_usb/pcan_usb_fd.c"
          ],
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              "versionType": "git"
            },
            {
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            },
            {
              "lessThan": "89c92a8052698dbbd3652a77c04d02bbd74a3275",
              "status": "affected",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.0"
            },
            {
              "lessThan": "4.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.6.151",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: peak_usb: validate uCAN receive record lengths\n\npcan_usb_fd_decode_buf() walks uCAN records packed in one USB\nreceive buffer.\n\nRequire each record to contain the fixed header for its type, and verify\nCAN payload bytes before copying them into the skb."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:36:48.775Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

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.

Action not permitted

GHSA-FM8J-HX94-QC39

CVE-2026-74455 (GCVE-0-2026-74455)

Tags

Sightings

Nomenclature