From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E10BB26ED41; Fri, 9 Jan 2026 12:18:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767961094; cv=none; b=QnqaU/EqaNslVo24MbkCYbiTyFmWDrhb0J6H75liDgii04bReM4sPXrO0owL/YMhorExVD40Fq6cXHqs1cl1f36ww1fgViFGetnwEcll0fEG35wzBGeyZpXQ5TGzw8uX1StfPlUUHTuKm4SHeEhhn8aXQ4LJcr5kSV/kxXZoyQg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767961094; c=relaxed/simple; bh=mYesOmU0PZfBxrGjep/PL6EK72dSNc4wpB3Bs0a6Q6w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YHYKjVBY6X7xLFpJ/yUE4/DkvormnRSG90Ic1bTPOBjfXE6EPavDEmXSX5BycO0q455ANplZSESyJG4VvsJi0xm8vFAVO57tCIMF43hL5WFgmFsrdwK5zI7LZJvAjNHR3acIBdqyWMvMH5jkpOYKPtAFDHABTBsNbQefNFcEt2I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=qVaKR/NZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="qVaKR/NZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 70DA1C4CEF1; Fri, 9 Jan 2026 12:18:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767961093; bh=mYesOmU0PZfBxrGjep/PL6EK72dSNc4wpB3Bs0a6Q6w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qVaKR/NZ1GwZAoDBwU3gGxgomYYVX52iNBOXYu3/51SZX89YYTmfJ8+tQCWMNk/tF 9Yu5aF1efRao4HozlXHkyYeSwNdmva7tk8puleGj1l5yeaVSfaKU5HXOtamyJqCPl0 wXvnyi1QnM//8WC/wKfrhC5MwFcy2vnnv9QlzyVU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Junrui Luo , Takashi Iwai , Sasha Levin Subject: [PATCH 6.6 631/737] ALSA: wavefront: Fix integer overflow in sample size validation Date: Fri, 9 Jan 2026 12:42:50 +0100 Message-ID: <20260109112157.743080475@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260109112133.973195406@linuxfoundation.org> References: <20260109112133.973195406@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Junrui Luo [ Upstream commit 0c4a13ba88594fd4a27292853e736c6b4349823d ] 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 Link: https://patch.msgid.link/SYBPR01MB7881B47789D1B060CE8BF4C3AFC2A@SYBPR01MB7881.ausprd01.prod.outlook.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- sound/isa/wavefront/wavefront_synth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/sound/isa/wavefront/wavefront_synth.c +++ b/sound/isa/wavefront/wavefront_synth.c @@ -950,9 +950,9 @@ wavefront_send_sample (snd_wavefront_t * if (header->size) { dev->freemem = wavefront_freemem (dev); - if (dev->freemem < (int)header->size) { + if (dev->freemem < 0 || dev->freemem < header->size) { dev_err(dev->card->dev, - "insufficient memory to load %d byte sample.\n", + "insufficient memory to load %u byte sample.\n", header->size); return -ENOMEM; }