Re: [CHECKER] 5 additional buffer overruns in 2.5.48

[Jens Axboe <axboe@suse.de>]

On Sat, Nov 23 2002, Andy Chou wrote:
> ---------------------------------------------------------
> [BUG] [GEM] base starts at offset 4 of buf
> /u1/acc/linux/2.5.48/drivers/cdrom/cdrom.c:1170:dvd_read_physical: 
> ERROR:BUFFER:1170:1170:Array bounds error: base[16] indexed with [16]
> 	layer->track_density = base[3] & 0xf;
> 	layer->linear_density = base[3] >> 4;
> 	layer->start_sector = base[5] << 16 | base[6] << 8 | base[7];
> 	layer->end_sector = base[9] << 16 | base[10] << 8 | base[11];
> 	layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15];
> 
> Error --->
> 	layer->bca = base[16] >> 7;
> 
> 	return 0;

Ah good catch. The buf[20] is simply too small, it must be 21 (or
probably just 22 to make it even, the size is 21 bytes for header and
data)

-- 
Jens Axboe