Vulnerability-Lookup

GHSA-596R-RCX5-45WX

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: ems_usb: validate CPC message lengths

ems_usb_read_bulk_callback() walks CPC messages packed in one USB receive buffer.

Check that each declared message fits in the URB payload. Also require the type-specific payload to cover the fields used by the CAN, state, error and overrun handlers.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74460"
  ],
  "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: ems_usb: validate CPC message lengths\n\nems_usb_read_bulk_callback() walks CPC messages packed in one USB\nreceive buffer.\n\nCheck that each declared message fits in the URB payload. Also require the\ntype-specific payload to cover the fields used by the CAN, state, error and\noverrun handlers.",
  "id": "GHSA-596r-rcx5-45wx",
  "modified": "2026-08-19T18:32:27Z",
  "published": "2026-08-15T15:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74460"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-74460 (GCVE-0-2026-74460)

Vulnerability from cvelistv5 – Published: 2026-08-15 12:27 – Updated: 2026-08-19 16:36

Title

can: ems_usb: validate CPC message lengths

Summary

In the Linux kernel, the following vulnerability has been resolved: can: ems_usb: validate CPC message lengths ems_usb_read_bulk_callback() walks CPC messages packed in one USB receive buffer. Check that each declared message fits in the URB payload. Also require the type-specific payload to cover the fields used by the CAN, state, error and overrun handlers.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/bb3cc8da8a2967c0f…
https://git.kernel.org/stable/c/db5655287d78f00da…
https://git.kernel.org/stable/c/ce8125566b1d0b0f1…
https://git.kernel.org/stable/c/0b9090717c7e2184e…
https://git.kernel.org/stable/c/0b23144c59c126beb…
https://git.kernel.org/stable/c/df3ac2a672a528444…
https://git.kernel.org/stable/c/02925f51377f2a42a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6 (git) Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < db5655287d78f00daf98888a520bb8da4d30126d (git) Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < ce8125566b1d0b0f16449407e014addf451804ea (git) Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < 0b9090717c7e2184e2c427bbcc752f295116ac1d (git) Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < 0b23144c59c126beb4a7761a85a194ae0fe668a5 (git) Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < df3ac2a672a5284441f120d486acabdd6740fc2a (git) Affected: 702171adeed3607ee9603ec30ce081411e36ae42 , < 02925f51377f2a42a6724f00549167499c9302e5 (git)
Linux	Linux	Affected: 2.6.32 Unaffected: 0 , < 2.6.32 (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": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/ems_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "db5655287d78f00daf98888a520bb8da4d30126d",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "0b9090717c7e2184e2c427bbcc752f295116ac1d",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "df3ac2a672a5284441f120d486acabdd6740fc2a",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "02925f51377f2a42a6724f00549167499c9302e5",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/can/usb/ems_usb.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.32"
            },
            {
              "lessThan": "2.6.32",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "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": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
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                },
                {
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.44",
                  "versionStartIncluding": "2.6.32",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.8",
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "2.6.32",
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: ems_usb: validate CPC message lengths\n\nems_usb_read_bulk_callback() walks CPC messages packed in one USB\nreceive buffer.\n\nCheck that each declared message fits in the URB payload. Also require the\ntype-specific payload to cover the fields used by the CAN, state, error and\noverrun handlers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:36:57.996Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6"
        },
        {
          "url": "https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d"
        },
        {
          "url": "https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5"
        },
        {
          "url": "https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5"
        }
      ],
      "title": "can: ems_usb: validate CPC message lengths",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-74460",
    "datePublished": "2026-08-15T12:27:01.274Z",
    "dateReserved": "2026-08-15T05:44:03.901Z",
    "dateUpdated": "2026-08-19T16:36:57.996Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "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.

Action not permitted

GHSA-596R-RCX5-45WX

CVE-2026-74460 (GCVE-0-2026-74460)

Tags

Sightings

Nomenclature