From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 DBD3A1E5714 for ; Mon, 13 Jul 2026 20:53:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783976023; cv=none; b=RWCQzY2eoxoAMpbkxXN2fPgW7r3dWUaTQx/k2Chy1fDDXFsHIfGE0T3wDi2LbhakKtdcMYfukKuUMGYGljUmR34PbCwN2tLboIFsACJJTsoEZjEMFnMO74ZsVI0AX1fsuOJxqwR0f6xf5hCLmsYqgzU9+Re+OA7vhImvhbtGMHI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783976023; c=relaxed/simple; bh=BfSD06FMAAtPpAY3b7+FFO6zazcH5oBdA1e84WOsq/8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Z0WcqwQFNR7ZMp7OZg7u3fO8xJQbOGqk5bUWFGCVAmFY63+BreswdOM3lbDf6FFgKkAOhB00/xZrvT/MwgyinJ3Ky8zH9wKrTDo74o0LmmIQ8+jSwZw7erBOOj7je9GjJU8CuYEsY4Fbnj+UTdqdRdgdjk4sScA9thAFx7JdOqI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HVklmcXq; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="HVklmcXq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12C251F000E9; Mon, 13 Jul 2026 20:53:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783976022; bh=T0kgOlEEXt0Z+lA+Sm8yIgmzE4QdZRrIVhoUGvgV+a0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=HVklmcXqYvGKwJRHVvxCp70IAEjUWhNMVRFHzzplklPafHEGi3G7VBZG6rYgt+eCr /6E/b2kgN+uk+rfWQRyM/4/W7pY75WTiUQ+JGliFgaW37K6E99H2xzzpm6AtfeZhBs 4l+IGl1cugeRoxP5JPKrPVJTfu39evMxfbkohtsBVI3PoMkidgQO0AULA9QXhCWdl9 XVsRv8lqL21jxiwYh5YdITAt3amuLfMNKkhnN2l/exsDHZlRjLsSy4ftr7/T3BydhZ QLPhA31a8rGiVj4+Pgn0RZ+MegviD5AOUZXJlsS5+WDIyAHx7i5saBtbPjjDgJ4TlN ZbjnKeyEBU3Lw== From: Sasha Levin To: stable@vger.kernel.org Cc: Zhao Dongdong , Takashi Iwai , Sasha Levin Subject: [PATCH 6.6.y] ALSA: aoa: check snd_ctl_new1() return value Date: Mon, 13 Jul 2026 16:53:39 -0400 Message-ID: <20260713205339.2148895-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026071359-swung-cycle-429d@gregkh> References: <2026071359-swung-cycle-429d@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Zhao Dongdong [ Upstream commit 8df560fefe6fed6a20b7e06720eeaeccec349ac0 ] snd_ctl_new1() can return NULL when memory allocation fails. In layout.c, the function does not check the return value before dereferencing ctl->id.name or passing to aoa_snd_ctl_add(), which can lead to a NULL pointer dereference. Add NULL checks after snd_ctl_new1() calls and return early if any fails. Assisted-by: Opencode:DeepSeek-V4-Flash Cc: stable@vger.kernel.org Fixes: f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa") Signed-off-by: Zhao Dongdong Link: https://patch.msgid.link/tencent_35F3A25FEEBF190A2E15ED787754C57E3708@qq.com Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/aoa/fabrics/layout.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/aoa/fabrics/layout.c b/sound/aoa/fabrics/layout.c index 850dc8c53e9b55..d6da0c3f1740d7 100644 --- a/sound/aoa/fabrics/layout.c +++ b/sound/aoa/fabrics/layout.c @@ -947,6 +947,8 @@ static void layout_attached_codec(struct aoa_codec *codec) if (lineout == 1) ldev->gpio.methods->set_lineout(codec->gpio, 1); ctl = snd_ctl_new1(&lineout_ctl, codec->gpio); + if (!ctl) + return; if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE) strscpy(ctl->id.name, "Headphone Switch", sizeof(ctl->id.name)); @@ -961,6 +963,8 @@ static void layout_attached_codec(struct aoa_codec *codec) if (ldev->have_lineout_detect) { ctl = snd_ctl_new1(&lineout_detect_choice, ldev); + if (!ctl) + return; if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE) strscpy(ctl->id.name, "Headphone Detect Autoswitch", @@ -968,6 +972,8 @@ static void layout_attached_codec(struct aoa_codec *codec) aoa_snd_ctl_add(ctl); ctl = snd_ctl_new1(&lineout_detected, ldev); + if (!ctl) + return; if (cc->connected & CC_LINEOUT_LABELLED_HEADPHONE) strscpy(ctl->id.name, "Headphone Detected", -- 2.53.0