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CVE-2025-9558

Good to know:

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Date: November 26, 2025

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.

Severity Score

Related Resources (3)

https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-8wvr-688x-68vr
https://nvd.nist.gov/vuln/detail/CVE-2025-9558
https://www.mend.io/vulnerability-database/CVE-2025-9558

Severity Score

Weakness Type (CWE)

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-120

Top Fix

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Upgrade Version

Upgrade to version https://github.com/zephyrproject-rtos/zephyr.git - v4.3.0

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CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): HIGH

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