linux-kernel - [PATCH] video:fbdev:core:Calculate the size for colormap only after the validation of length for colormap.

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>] [day] [month] [year] [list]

Message-id: <1446204994-23755-1-git-send-email-shailendra.v@samung.com>
Date:	Fri, 30 Oct 2015 17:06:34 +0530
From:	Shailendra Verma <shailendra.v@...ung.com>
To:	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	linux-fbdev@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, vidushi.koul@...sung.com
Subject: [PATCH] video:fbdev:core:Calculate the size for colormap only after
 the validation of length for colormap.

From: Shailendra Verma <shailendra.v@...sung.com>

While allocating the memory for color map, the memory size for colors
is being calculated before the validation of length for color map.
Moved the size calculation part after the validation of color map length.

Signed-off-by: Shailendra Verma <shailendra.v@...sung.com>
---
 drivers/video/fbdev/core/fbcmap.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/core/fbcmap.c b/drivers/video/fbdev/core/fbcmap.c
index f89245b..45ad567 100644
--- a/drivers/video/fbdev/core/fbcmap.c
+++ b/drivers/video/fbdev/core/fbcmap.c
@@ -91,7 +91,7 @@ static const struct fb_cmap default_16_colors = {
 
 int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags)
 {
-	int size = len * sizeof(u16);
+	int size;
 	int ret = -ENOMEM;
 
 	if (cmap->len != len) {
@@ -99,6 +99,7 @@ int fb_alloc_cmap_gfp(struct fb_cmap *cmap, int len, int transp, gfp_t flags)
 		if (!len)
 			return 0;
 
+		size = len * sizeof(u16);
 		cmap->red = kmalloc(size, flags);
 		if (!cmap->red)
 			goto fail;
-- 
1.9.1

--
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/