Missing mutex synchronization in AudioBuffer::freeSpace() in schreibfaul1 ESP32-audioI2S 3.4.5 creates a race condition between concurrent tasks. The function calculates available buffer space without protecting shared read/write pointers, returning an incorrectly large value. Trusting this value leads to heap out-of-bounds write, memory corruption, device crash, and arbitrary code execution.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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References
History
Tue, 28 Jul 2026 16:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Missing mutex synchronization in AudioBuffer::freeSpace() in schreibfaul1 ESP32-audioI2S 3.4.5 creates a race condition between concurrent tasks. The function calculates available buffer space without protecting shared read/write pointers, returning an incorrectly large value. Trusting this value leads to heap out-of-bounds write, memory corruption, device crash, and arbitrary code execution. | |
| References |
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-07-28T14:29:48.091Z
Reserved: 2026-06-07T00:00:00.000Z
Link: CVE-2026-51261
Vulnrichment
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