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neofb: Fix pseudo_palette array overrun in neofb_setcolreg

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The pseudo_palette has room for 16 entries only, but in truecolor mode, it
attempts to write 256.

Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Acked-by: Tero Roponen <teanropo@jyu.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Antonino A. Daplas 2007-05-31 14:04:57 +08:00 committed by Linus Torvalds
parent 3f0a6766e0
commit a2b7d2e97e
1 changed files with 16 additions and 14 deletions
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30
drivers/video/neofb.c
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@ -1286,34 +1286,36 @@ static int neofb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
if (regno >= fb->cmap.len || regno > 255)
return -EINVAL;
switch (fb->var.bits_per_pixel) {
case 8:
if (fb->var.bits_per_pixel <= 8) {
outb(regno, 0x3c8);
outb(red >> 10, 0x3c9);
outb(green >> 10, 0x3c9);
outb(blue >> 10, 0x3c9);
break;
case 16:
((u32 *) fb->pseudo_palette)[regno] =
} else if (regno < 16) {
switch (fb->var.bits_per_pixel) {
case 16:
((u32 *) fb->pseudo_palette)[regno] =
((red & 0xf800)) | ((green & 0xfc00) >> 5) |
((blue & 0xf800) >> 11);
break;
case 24:
((u32 *) fb->pseudo_palette)[regno] =
break;
case 24:
((u32 *) fb->pseudo_palette)[regno] =
((red & 0xff00) << 8) | ((green & 0xff00)) |
((blue & 0xff00) >> 8);
break;
break;
#ifdef NO_32BIT_SUPPORT_YET
case 32:
((u32 *) fb->pseudo_palette)[regno] =
case 32:
((u32 *) fb->pseudo_palette)[regno] =
((transp & 0xff00) << 16) | ((red & 0xff00) << 8) |
((green & 0xff00)) | ((blue & 0xff00) >> 8);
break;
break;
#endif
default:
return 1;
default:
return 1;
}
}
return 0;
}