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cyblafb: fix pseudo_palette array overrun in setcolreg

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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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Antonino A. Daplas 2007-07-17 04:05:35 -07:00 committed by Linus Torvalds
parent 11494543a5
commit 7592181005
1 changed files with 12 additions and 9 deletions
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21
drivers/video/cyblafb.c
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@ -1068,15 +1068,18 @@ static int cyblafb_setcolreg(unsigned regno, unsigned red, unsigned green,
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;
}