Re: [PATCH v2] ALSA: wavefront: Fix integer overflow in sample size validation

On Thu, 06 Nov 2025 03:49:46 +0100, Junrui Luo wrote:

The wavefront_send_sample() function has an integer overflow issue when validating sample size. The header->size field is u32 but gets cast to int for comparison with dev->freemem

Fix by using unsigned comparison to avoid integer overflow.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable@vger.kernel.org Signed-off-by: Junrui Luo moonafterrain@outlook.com

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Changes in v2:

• Check for negative freemem before size comparison
• Link to v1: https://lore.kernel.org/all/SYBPR01MB7881FA5CEECF0CCEABDD6CC4AFC4A@SYBPR01MB...

Applied now. Thanks.

Takashi