PT-2026-53091 · Undefined · Undefined
Publicado
2026-06-28
·
Atualizado
2026-06-28
·
CVE-2026-10593
CVSS v3.1
6.5
Média
| Vetor | AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
The Zephyr Bluetooth LE Audio Basic Audio Profile (BAP) unicast client mishandles peer-supplied ASE state notifications. In unicast client ep qos state() (subsys/bluetooth/audio/bap unicast client.c), the handler writes attacker-controlled QoS fields (interval, framing, phy, sdu, rtn, latency, pd) through the stream-qos pointer with only a stream != NULL guard. stream-qos is NULL for any stream that has been codec-configured via bt bap stream config() but not yet added to a unicast group (it is set only by unicast group add stream()). A malicious or buggy remote ASCS server, to which the local device is connected as a BAP unicast client, can send a GATT notification announcing the ASE has entered the QoS Configured state while the local endpoint is still in the Codec Configured state — a transition the dispatcher explicitly permits — during that window, causing a write through a NULL pointer and a crash (denial of service). The data written is itself remote-controlled. The defect shipped in v4.3.0 and v4.4.0 (and earlier). The fix re-points all BAP QoS storage to the always-valid embedded ep-qos struct, eliminating the NULL dereference.
Correção
NULL Pointer Dereference
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