linux-kernel - [PATCH 4.9 113/130] mtd: spi-nor: Off by one in cqspi_setup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20170124075539.552970328@linuxfoundation.org>
Date:   Tue, 24 Jan 2017 08:55:53 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
        Marek Vasut <marex@...x.de>,
        Cyrille Pitchen <cyrille.pitchen@...el.com>
Subject: [PATCH 4.9 113/130] mtd: spi-nor: Off by one in cqspi_setup_flash()

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 193e87143c290ec16838f5368adc0e0bc94eb931 upstream.

There are CQSPI_MAX_CHIPSELECT elements in the ->f_pdata array so the >
should be >=.

Fixes: 140623410536 ('mtd: spi-nor: Add driver for Cadence Quad SPI Flash Controller')
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Reviewed-by: Marek Vasut <marex@...x.de>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mtd/spi-nor/cadence-quadspi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mtd/spi-nor/cadence-quadspi.c
+++ b/drivers/mtd/spi-nor/cadence-quadspi.c
@@ -1082,7 +1082,7 @@ static int cqspi_setup_flash(struct cqsp
 			goto err;
 		}
 
-		if (cs > CQSPI_MAX_CHIPSELECT) {
+		if (cs >= CQSPI_MAX_CHIPSELECT) {
 			dev_err(dev, "Chip select %d out of range.\n", cs);
 			goto err;
 		}