Home/CVE/In the Linux kernel, the following vulnerability has been resolved: net: lapbether: handle NETDEV_PRE_TYPE_CHANGE lapb
CVE

CVE-2026-43103

In the Linux kernel, the following vulnerability has been resolved: net: lapbether: handle NETDEV_PRE_TYPE_CHANGE lapb

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.

MEDIUM · CVSS 5.5 EPSS 0.00013
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
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Affected Products & Versions

5
linux kernel>= 2.6.24 and < 6.6.136
linux kernel>= 6.7 and < 6.12.83
linux kernel>= 6.13 and < 6.18.24
linux kernel>= 6.19 and < 6.19.14
linux kernelall versions
▣

Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 May 2026 · 10:16 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://git.kernel.org/stable/c/328bb2cff5c2ed973f595ded769e15f4b7a117bePatch
https://git.kernel.org/stable/c/363a38044b8cd5b496d241651a1fb666e7c5fe3ePatch
https://git.kernel.org/stable/c/63851f60781aa89258c8f0952cd13940aab0888ePatch
https://git.kernel.org/stable/c/b117056768ab7deb434e7d72065e48d2083a0c2aPatch
https://git.kernel.org/stable/c/b120e4432f9f56c7103133d6a11245e617695adbPatch
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