linux-kernel - [PATCH] Lattice ECP3 FPGA: Check firmware pointer

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-next>] [day] [month] [year] [list]

Date:	Tue,  5 Aug 2014 18:19:37 +0200
From:	jean-michel.hautbois@...alys.com
To:	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	arnd@...db.de
Cc:	jhautbois@...il.com,
	Jean-Michel Hautbois <jean-michel.hautbois@...alys.com>
Subject: [PATCH] Lattice ECP3 FPGA: Check firmware pointer

From: Jean-Michel Hautbois <jean-michel.hautbois@...alys.com>

This patch corrects a lack of testing.
If fw is NULL when calling firmware_load(), it results in a kernel oops.

Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@...alys.com>
---
 drivers/misc/lattice-ecp3-config.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/misc/lattice-ecp3-config.c b/drivers/misc/lattice-ecp3-config.c
index 7ffdb58..7e1efd5 100644
--- a/drivers/misc/lattice-ecp3-config.c
+++ b/drivers/misc/lattice-ecp3-config.c
@@ -79,6 +79,11 @@ static void firmware_load(const struct firmware *fw, void *context)
	u32 jedec_id;
	u32 status;

+	if (fw == NULL) {
+		dev_err(&spi->dev, "Cannot load firmware, aborting\n");
+		return;
+	}
+
	if (fw->size == 0) {
		dev_err(&spi->dev, "Error: Firmware size is 0!\n");
		return;
--
2.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/