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CVE-2022-39343
MEDIUM · CVSS 5.6
EPSS exploitation probability: 0%
Published 2022-11-08T08:15:09.537 · Last modified 2026-06-17T04:58:10.787

Summary

Azure RTOS FileX is a FAT-compatible file system that’s fully integrated with Azure RTOS ThreadX. In versions before 6.2.0, the Fault Tolerant feature of Azure RTOS FileX includes integer under and overflows which may be exploited to achieve buffer overflow and modify memory contents. When a valid log file with correct ID and checksum is detected by the `_fx_fault_tolerant_enable` function an attempt to recover the previous failed write operation is taken by call of `_fx_fault_tolerant_apply_logs`. This function iterates through the log entries and performs required recovery operations. When properly crafted a log including entries of type `FX_FAULT_TOLERANT_DIR_LOG_TYPE` may be utilized to introduce unexpected behavior. This issue has been patched in version 6.2.0. A workaround to fix lin

Affected products

microsoft — azure_rtos_filex

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.