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| author | Antonino A. Daplas <adaplas@gmail.com> | 2007-07-17 04:05:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-17 10:23:12 -0700 |
| commit | a66ad56eb2c9644717da4d7f05f971d6786145e3 (patch) | |
| tree | f4cb903d8f7174c727d0b4e64331cb9b1f1a65f8 /drivers/video | |
| parent | 02c2c209c26ca452b2e688cdb0cb6bb4bc7cdf7f (diff) | |
| download | linux-a66ad56eb2c9644717da4d7f05f971d6786145e3.tar.bz2 | |
pvr2fb: fix pseudo_palette array overrun and typecast
- the pseudo_palette has only 16 elements. Do not write if regno (the array
index) is more than 15.
- if using generic drawing libraries, the typecast of pseudo_palette is
always u32 *
Signed-off-by: Antonino Daplas <adaplas@gmail.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/pvr2fb.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/video/pvr2fb.c b/drivers/video/pvr2fb.c index 2ba959a83eb0..0f88c30f94f8 100644 --- a/drivers/video/pvr2fb.c +++ b/drivers/video/pvr2fb.c @@ -333,24 +333,25 @@ static int pvr2fb_setcolreg(unsigned int regno, unsigned int red, ((blue & 0xf800) >> 11); pvr2fb_set_pal_entry(par, regno, tmp); - ((u16*)(info->pseudo_palette))[regno] = tmp; break; case 24: /* RGB 888 */ red >>= 8; green >>= 8; blue >>= 8; - ((u32*)(info->pseudo_palette))[regno] = (red << 16) | (green << 8) | blue; + tmp = (red << 16) | (green << 8) | blue; break; case 32: /* ARGB 8888 */ red >>= 8; green >>= 8; blue >>= 8; tmp = (transp << 24) | (red << 16) | (green << 8) | blue; pvr2fb_set_pal_entry(par, regno, tmp); - ((u32*)(info->pseudo_palette))[regno] = tmp; break; default: pr_debug("Invalid bit depth %d?!?\n", info->var.bits_per_pixel); return 1; } + if (regno < 16) + ((u32*)(info->pseudo_palette))[regno] = tmp; + return 0; } |