Description
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.
Published: 2025-09-19
Score: 7.6 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-30240 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.
History

Wed, 29 Oct 2025 18:15:00 +0000

Type Values Removed Values Added
First Time appeared Zephyrproject
Zephyrproject zephyr
CPEs cpe:2.3:o:zephyrproject:zephyr:*:*:*:*:*:*:*:*
Vendors & Products Zephyrproject
Zephyrproject zephyr

Mon, 22 Sep 2025 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Zephyrproject-rtos
Zephyrproject-rtos zephyr
Vendors & Products Zephyrproject-rtos
Zephyrproject-rtos zephyr

Fri, 19 Sep 2025 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 19 Sep 2025 05:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Bluetooth: bt_conn_tx_processor unsafe handling
Weaknesses CWE-123
References
Metrics cvssV3_1

{'score': 7.6, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H'}


Subscriptions

Zephyrproject Zephyr
Zephyrproject-rtos Zephyr
cve-icon MITRE

Status: PUBLISHED

Assigner: zephyr

Published:

Updated: 2025-09-19T13:09:05.011Z

Reserved: 2025-07-10T04:08:30.581Z

Link: CVE-2025-7403

cve-icon Vulnrichment

Updated: 2025-09-19T13:09:00.765Z

cve-icon NVD

Status : Analyzed

Published: 2025-09-19T06:15:35.960

Modified: 2025-10-29T18:05:53.470

Link: CVE-2025-7403

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-22T10:06:33Z

Weaknesses