Vulnerability-Lookup

GHSA-VMCC-HWVC-GQ3R

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-06 12:30

Details

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

net: lapbether: handle NETDEV_PRE_TYPE_CHANGE

lapbeth_data_transmit() expects the underlying device type to be ARPHRD_ETHER.

Returning NOTIFY_BAD from lapbeth_device_event() makes sure bonding driver can not break this expectation.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43103"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T10:16:23Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lapbether: handle NETDEV_PRE_TYPE_CHANGE\n\nlapbeth_data_transmit() expects the underlying device type\nto be ARPHRD_ETHER.\n\nReturning NOTIFY_BAD from lapbeth_device_event() makes sure\nbonding driver can not break this expectation.",
  "id": "GHSA-vmcc-hwvc-gq3r",
  "modified": "2026-05-06T12:30:27Z",
  "published": "2026-05-06T12:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43103"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/328bb2cff5c2ed973f595ded769e15f4b7a117be"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/363a38044b8cd5b496d241651a1fb666e7c5fe3e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63851f60781aa89258c8f0952cd13940aab0888e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b117056768ab7deb434e7d72065e48d2083a0c2a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b120e4432f9f56c7103133d6a11245e617695adb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-43103 (GCVE-0-2026-43103)

Vulnerability from cvelistv5 – Published: 2026-05-06 07:40 – Updated: 2026-05-06 07:40

Title

net: lapbether: handle NETDEV_PRE_TYPE_CHANGE

Summary

In the Linux kernel, the following vulnerability has been resolved: net: lapbether: handle NETDEV_PRE_TYPE_CHANGE lapbeth_data_transmit() expects the underlying device type to be ARPHRD_ETHER. Returning NOTIFY_BAD from lapbeth_device_event() makes sure bonding driver can not break this expectation.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/363a38044b8cd5b49…
	https://git.kernel.org/stable/c/328bb2cff5c2ed973…
	https://git.kernel.org/stable/c/63851f60781aa8925…
	https://git.kernel.org/stable/c/b117056768ab7deb4…
	https://git.kernel.org/stable/c/b120e4432f9f56c71…

Impacted products

Vendor

Product

Version

Linux

Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 363a38044b8cd5b496d241651a1fb666e7c5fe3e (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 328bb2cff5c2ed973f595ded769e15f4b7a117be (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 63851f60781aa89258c8f0952cd13940aab0888e (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < b117056768ab7deb434e7d72065e48d2083a0c2a (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < b120e4432f9f56c7103133d6a11245e617695adb (git)

Linux

Affected: 2.6.24
Unaffected: 0 , < 2.6.24 (semver)
Unaffected: 6.6.136 , ≤ 6.6.* (semver)
Unaffected: 6.12.83 , ≤ 6.12.* (semver)
Unaffected: 6.18.24 , ≤ 6.18.* (semver)
Unaffected: 6.19.14 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wan/lapbether.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "363a38044b8cd5b496d241651a1fb666e7c5fe3e",
              "status": "affected",
              "version": "872254dd6b1f80cb95ee9e2e22980888533fc293",
              "versionType": "git"
            },
            {
              "lessThan": "328bb2cff5c2ed973f595ded769e15f4b7a117be",
              "status": "affected",
              "version": "872254dd6b1f80cb95ee9e2e22980888533fc293",
              "versionType": "git"
            },
            {
              "lessThan": "63851f60781aa89258c8f0952cd13940aab0888e",
              "status": "affected",
              "version": "872254dd6b1f80cb95ee9e2e22980888533fc293",
              "versionType": "git"
            },
            {
              "lessThan": "b117056768ab7deb434e7d72065e48d2083a0c2a",
              "status": "affected",
              "version": "872254dd6b1f80cb95ee9e2e22980888533fc293",
              "versionType": "git"
            },
            {
              "lessThan": "b120e4432f9f56c7103133d6a11245e617695adb",
              "status": "affected",
              "version": "872254dd6b1f80cb95ee9e2e22980888533fc293",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wan/lapbether.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.24"
            },
            {
              "lessThan": "2.6.24",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.136",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.83",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.24",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.14",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0",
                  "versionStartIncluding": "2.6.24",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lapbether: handle NETDEV_PRE_TYPE_CHANGE\n\nlapbeth_data_transmit() expects the underlying device type\nto be ARPHRD_ETHER.\n\nReturning NOTIFY_BAD from lapbeth_device_event() makes sure\nbonding driver can not break this expectation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-06T07:40:32.357Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/363a38044b8cd5b496d241651a1fb666e7c5fe3e"
        },
        {
          "url": "https://git.kernel.org/stable/c/328bb2cff5c2ed973f595ded769e15f4b7a117be"
        },
        {
          "url": "https://git.kernel.org/stable/c/63851f60781aa89258c8f0952cd13940aab0888e"
        },
        {
          "url": "https://git.kernel.org/stable/c/b117056768ab7deb434e7d72065e48d2083a0c2a"
        },
        {
          "url": "https://git.kernel.org/stable/c/b120e4432f9f56c7103133d6a11245e617695adb"
        }
      ],
      "title": "net: lapbether: handle NETDEV_PRE_TYPE_CHANGE",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43103",
    "datePublished": "2026-05-06T07:40:32.357Z",
    "dateReserved": "2026-05-01T14:12:55.984Z",
    "dateUpdated": "2026-05-06T07:40:32.357Z",
    "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.

Action not permitted

GHSA-VMCC-HWVC-GQ3R

CVE-2026-43103 (GCVE-0-2026-43103)

Tags

Sightings

Nomenclature