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 C17CB1863 for ; Wed, 28 Dec 2022 15:28:13 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DDAEC433EF; Wed, 28 Dec 2022 15:28:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672241293; bh=P7pd974hiBCB1vAla5DqBGWjzr9aVuHFVaOpyD5UIp0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CnvksXx35iPdes2wlshSJLe6+hfafrXsdt5CFMc0tKE/ao2KkHRwlZ/uJ7EFNB8cn hH9jxS1gm9x6gipYTyZlAnurQJE9wVnCP6CNnpWyEGnEGxsfsT3twtTXIjmodY/BZN VA/2Exv64ns8vmecp70q4HI8Wq0OAlzt2pShexUU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Laurent Pinchart , Sakari Ailus , Hans Verkuil , Sasha Levin Subject: [PATCH 6.1 0229/1146] media: v4l2-ctrls: Fix off-by-one error in integer menu control check Date: Wed, 28 Dec 2022 15:29:28 +0100 Message-Id: <20221228144336.361707826@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144330.180012208@linuxfoundation.org> References: <20221228144330.180012208@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Laurent Pinchart [ Upstream commit b6bcdf763db1f5ea602bf876cfe91debfb3c7773 ] The V4L2 API defines the maximum value for an integer menu control as the number of elements minus one. The v4l2_ctrl_new_std_menu() validates this constraint with an off-by-one error. Fix it. Fixes: d1e9b7c12b74 ("[media] V4L: Add support for integer menu controls with standard menu items") Signed-off-by: Laurent Pinchart Reviewed-by: Sakari Ailus Signed-off-by: Hans Verkuil Signed-off-by: Sasha Levin --- drivers/media/v4l2-core/v4l2-ctrls-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c index 0dab1d7b90f0..29169170880a 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c @@ -1827,7 +1827,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, else if (type == V4L2_CTRL_TYPE_INTEGER_MENU) qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len); - if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) { + if ((!qmenu && !qmenu_int) || (qmenu_int && max >= qmenu_int_len)) { handler_set_err(hdl, -EINVAL); return NULL; } -- 2.35.1