diff options
| -rw-r--r-- | futility/cmd_gbb_utility.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/futility/cmd_gbb_utility.c b/futility/cmd_gbb_utility.c index 9810058d..85b47829 100644 --- a/futility/cmd_gbb_utility.c +++ b/futility/cmd_gbb_utility.c @@ -342,6 +342,9 @@ static int read_from_file(const char *msg, const char *filename, goto done_close; } + /* Wipe existing data. */ + memset(start, 0, size); + /* It's okay if we read less than size. That's just the max. */ count = fread(start, 1, size, fp); if (ferror(fp)) { @@ -568,6 +571,9 @@ static int do_gbb_utility(int argc, char *argv[]) gbb->hwid_size); errorcnt++; } else { + /* Wipe data before writing new value. */ + memset(gbb_base + gbb->hwid_offset, 0, + gbb->hwid_size); strcpy((char *)(gbb_base + gbb->hwid_offset), opt_hwid); } |