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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-81507

ESF-IDF: Bluetooth Classic L2CAP Heap Memory Disclosure Allowing Unauthorized Access to Sensitive Data

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Prior to 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1, ESP-IDF BlueDroid L2CAP configuration-option processing in l2c_main.c and l2c_utils.c does not consistently validate option lengths against the remaining received packet bytes. A remote unauthenticated BR/EDR peer within radio range can send a malformed L2CAP configuration request that causes an out-of-bounds read, and under some runtime conditions limited adjacent Bluetooth stack memory can be included in an outbound L2CAP Configuration Response. The issue affects ESP32-class products using the BlueDroid host stack with Classic Bluetooth enabled. This issue is fixed in 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

espressif esp-idf

  • < 5.2.8affected
  • >= 5.3-beta1, < 5.3.6affected
  • >= 5.4-beta1, < 5.5.5affected
  • >= 6.0-beta1, < 6.0.3affected
  • >= 6.1-beta1, < 6.1-rc1affected

References