From a66ad56eb2c9644717da4d7f05f971d6786145e3 Mon Sep 17 00:00:00 2001 From: "Antonino A. Daplas" Date: Tue, 17 Jul 2007 04:05:39 -0700 Subject: [PATCH] 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 Acked-by: Paul Mundt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/pvr2fb.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/video/pvr2fb.c b/drivers/video/pvr2fb.c index 2ba959a..0f88c30 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; } -- 1.8.2.3