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

Vulnerability from cvelistv5 – Published: 2026-05-06 07:40 – Updated: 2026-05-06 07:40
VLAI?
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
References
Impacted products
Vendor Product Version
Linux Linux Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 363a38044b8cd5b496d241651a1fb666e7c5fe3e (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 328bb2cff5c2ed973f595ded769e15f4b7a117be (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < 63851f60781aa89258c8f0952cd13940aab0888e (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < b117056768ab7deb434e7d72065e48d2083a0c2a (git)
Affected: 872254dd6b1f80cb95ee9e2e22980888533fc293 , < b120e4432f9f56c7103133d6a11245e617695adb (git)
Create a notification for this product.
    Linux 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)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-43103",
      "date": "2026-05-08",
      "epss": "0.00018",
      "percentile": "0.04875"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43103\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-06T10:16:23.867\",\"lastModified\":\"2026-05-06T13:07:51.607\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"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.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/328bb2cff5c2ed973f595ded769e15f4b7a117be\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/363a38044b8cd5b496d241651a1fb666e7c5fe3e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/63851f60781aa89258c8f0952cd13940aab0888e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b117056768ab7deb434e7d72065e48d2083a0c2a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b120e4432f9f56c7103133d6a11245e617695adb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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.

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.