FKIE_CVE-2026-74460

Vulnerability from fkie_nvd - Published: 2026-08-15 13:17 - Updated: 2026-08-19 17:21
Severity
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            },
            {
              "lessThan": "ce8125566b1d0b0f16449407e014addf451804ea",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "0b9090717c7e2184e2c427bbcc752f295116ac1d",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "versionType": "git"
            },
            {
              "lessThan": "0b23144c59c126beb4a7761a85a194ae0fe668a5",
              "status": "affected",
              "version": "702171adeed3607ee9603ec30ce081411e36ae42",
              "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-74460",
  "lastModified": "2026-08-19T17:21:02.950",
  "metrics": {},
  "published": "2026-08-15T13:17:50.663",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/02925f51377f2a42a6724f00549167499c9302e5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0b23144c59c126beb4a7761a85a194ae0fe668a5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0b9090717c7e2184e2c427bbcc752f295116ac1d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bb3cc8da8a2967c0f8e83d148fc6870b19fa32c6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ce8125566b1d0b0f16449407e014addf451804ea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/db5655287d78f00daf98888a520bb8da4d30126d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/df3ac2a672a5284441f120d486acabdd6740fc2a"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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