CVE-2026-93015

BlueKitchen BTstack through 1.8.2 A2DP SEP Discovery Out-of-Bounds Write

State: Published
Severity: 7.0 High
Published: Sep 17, 2026
Updated: Sep 17, 2026
Reserved: Sep 17, 2026

Description

BlueKitchen BTstack through 1.8.2 fails to validate the peer-reported endpoint count against table bounds in A2DP stream endpoint discovery. A bonded peer can send an AVDTP DISCOVER response with more endpoints than the fixed table holds, causing out-of-bounds writes that corrupt adjacent static objects and crash the process or sever event delivery.

Scores

CVSS	Score	Vector	Source
4.0	7.0 High	CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N	VulnCheck
3.1	6.3 Medium	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H	VulnCheck

Weaknesses

CWE-787 Out-of-bounds Write
CWE-1284 Improper Validation of Specified Quantity in Input

Affected Products

Product	Versions
BTstackBlueKitchen GmbH	1.8.2 and earlierAffected

References

Patch Commitpatch
https://github.com/bluekitchen/btstack/blob/v1.8.2/src/classic/a2dp.c#L568technical-description
AVDTP L2CAP service registered at the stack default security leveltechnical-description
https://github.com/bluekitchen/btstackproduct
VulnCheck Advisory: BlueKitchen BTstack through 1.8.2 A2DP SEP Discovery Out-of-Bounds Writethird-party-advisory

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