Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate mesh send advertising payload length mesh_send() currently bounds MGMT_OP_MESH_SEND by total command length, but it never verifies that the bytes supplied for the flexible adv_data[] array actually match the embedded adv_data_len field. MGMT_MESH_SEND_SIZE only covers the fixed header, so a truncated command can still pass the existing 20..50 byte range check and later drive the async mesh send path past the end of the queued command buffer. Keep rejecting zero-length and oversized advertising payloads, but validate adv_data_len explicitly and require the command length to exactly match the flexible array size before queueing the request.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.1, < 6.1.168 |
References
- https://git.kernel.org/stable/c/0b706fb2294aff3adfd54653bda1b5e356ad4566Patch
- https://git.kernel.org/stable/c/244b639e6a3a8e26241e201004a3a9f764476631Patch
- https://git.kernel.org/stable/c/24fa32369cf15d8fc918bdfe94097b12e6acada0Patch
- https://git.kernel.org/stable/c/562ed1954f0c1bff3422b7b752bd3dacf185edbfPatch
- https://git.kernel.org/stable/c/bda93eec78cdbfe5cda00785cefebd443e56b88bPatch
- https://git.kernel.org/stable/c/edb5898cfa91afe7e8f83eda18d93034c953d632Patch
FAQ
What is CVE-2026-43017?
CVE-2026-43017 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate mesh send advertising payload length mesh_send() currently bounds MGMT_OP_MESH_SEND by total command len...
How severe is CVE-2026-43017?
CVE-2026-43017 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43017?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.