CVE Vulnerabilities

CVE-2025-7403

Write-what-where Condition

Published: Sep 19, 2025 | Modified: Oct 29, 2025
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

Unsafe handling in bt_conn_tx_processor causes a use-after-free, resulting in a write-before-zero. The written 4 bytes are attacker-controlled, enabling precise memory corruption.

Weakness

Any condition where the attacker has the ability to write an arbitrary value to an arbitrary location, often as the result of a buffer overflow.

Affected Software

Name Vendor Start Version End Version
Zephyr Zephyrproject * 4.1.0 (including)

Potential Mitigations

References