Fix potential DMA buffer handling errors#284
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AlexLanzano merged 1 commit intowolfSSL:mainfrom Feb 10, 2026
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For DMA buffer cleanup using wh_Client_DmaProcessClientAddress(), the size of the buffer is required. In many places, the size stored in the request message is used during the cleanup call. However, the request is overwritten when reading the response from the server, potentially overwriting the stored size parameters. When the size passed to the cleanup is incorrectly overwritten with zero, the method is exited early, potentially causing a memory leak.
bigbrett
approved these changes
Feb 10, 2026
AlexLanzano
approved these changes
Feb 10, 2026
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For DMA buffer cleanup using
wh_Client_DmaProcessClientAddress(), the size of the buffer is required. In many places on the client side, the size stored in the request message is used during the cleanup call. However, the request is overwritten when reading the response from the server (as they share the underlying buffer), potentially overwriting the stored size parameters. When the size passed to the cleanup is incorrectly overwritten with zero, the cleanup method is exited early, potentially causing a memory leak.This problem has been identified while reworking the AES DMA operations for #282.