CVE-2025-9558 - Bluetooth: Mesh: Out-of-Bound Write in gen_prov_start

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HIGH

Bluetooth: Mesh: Out-of-Bound Write in gen_prov_start

Published Nov 26, 2025

7.6

HIGH

CVSS 3.1

EPSS 0.19%

Description

There is a potential OOB Write vulnerability in the gen_prov_start function in pb_adv.c. The full length of the received data is copied into the link.rx.buf receiver buffer without any validation on the data size.

Affected products

Vendor Zephyrproject-Rtos Product Zephyr Default
unaffected
- Version
  -
  Status
  affected
  Constraints
  <=4.2

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Zephyrproject-Rtos

Zephyr

unaffected

Version	Status	Constraints
-	affected	<=4.2

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-120

Classic Buffer Overflow

References (2)

Link	Providers	Tags
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-199712		Advisory
https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-8wvr-688x-68vr