From: "Antonino A. Daplas" <adaplas@gmail.com>
To: Andrew Morton <akpm@osdl.org>
Cc: Linux Fbdev development list
<linux-fbdev-devel@lists.sourceforge.net>,
Knut Petersen <Knut_Petersen@t-online.de>
Subject: [PATCH 03/24] cyblafb: Fix pseudo_palette array overrun in setcolreg
Date: Sat, 02 Jun 2007 17:56:58 +0800 [thread overview]
Message-ID: <46613EEA.2030504@gmail.com> (raw)
The pseudo_palette has only 16 elements. Do not write if regno (the array
index) is more than 15.
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
---
drivers/video/cyblafb.c | 21 ++++++++++++---------
1 files changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/video/cyblafb.c b/drivers/video/cyblafb.c
index 94a66c2..e23324d 100644
--- a/drivers/video/cyblafb.c
+++ b/drivers/video/cyblafb.c
@@ -1068,15 +1068,18 @@ static int cyblafb_setcolreg(unsigned re
out8(0x3C9, green >> 10);
out8(0x3C9, blue >> 10);
- } else if (bpp == 16) // RGB 565
- ((u32 *) info->pseudo_palette)[regno] =
- (red & 0xF800) |
- ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11);
- else if (bpp == 32) // ARGB 8888
- ((u32 *) info->pseudo_palette)[regno] =
- ((transp & 0xFF00) << 16) |
- ((red & 0xFF00) << 8) |
- ((green & 0xFF00)) | ((blue & 0xFF00) >> 8);
+ } else if (regno < 16) {
+ if (bpp == 16) // RGB 565
+ ((u32 *) info->pseudo_palette)[regno] =
+ (red & 0xF800) |
+ ((green & 0xFC00) >> 5) |
+ ((blue & 0xF800) >> 11);
+ else if (bpp == 32) // ARGB 8888
+ ((u32 *) info->pseudo_palette)[regno] =
+ ((transp & 0xFF00) << 16) |
+ ((red & 0xFF00) << 8) |
+ ((green & 0xFF00)) | ((blue & 0xFF00) >> 8);
+ }
return 0;
}
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reply other threads:[~2007-06-02 10:19 UTC|newest]
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