diff options
Diffstat (limited to 'util')
| -rw-r--r-- | util/nvmutil/nvmutil.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/util/nvmutil/nvmutil.c b/util/nvmutil/nvmutil.c index d9c09bc4..98f5bdcd 100644 --- a/util/nvmutil/nvmutil.c +++ b/util/nvmutil/nvmutil.c @@ -1888,6 +1888,16 @@ rw_file_exact(int fd, u8 *mem, size_t nrw, size_t nrw_cur; void *mem_cur; + if (mem == NULL) + goto err_rw_file_exact; + + if (fd < 0 + || off < 0 + || !nrw /* prevent zero read request */ + || nrw > (size_t)SSIZE_MAX /* prevent overflow */ + || (uint)rw_type > IO_PWRITE) + goto err_rw_file_exact; + while (1) { /* Prevent theoretical overflow */ |