On 01/15/2017 02:31 PM, Alden Tondettar wrote: > If a GUID Partition Table claims to have more than 2**25 entries, the > calculation of the partition table size in alloc_read_gpt_entries() will > overflow a 32-bit integer and not enough space will be allocated for the > table. > > Nothing seems to get written out of bounds, but later efi_partition() will > read up to 32768 bytes from a 128 byte buffer, possibly OOPSing or exposing > information to /proc/partitions and uevents. > > The problem exists on both 64-bit and 32-bit platforms. > > Fix the overflow and also print a meaningful debug message if the table > size is too large. Applied for 4.11, thanks. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
