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| author | Stewart Smith <stewart@linux.vnet.ibm.com> | 2015-11-17 16:57:40 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2015-11-17 16:57:40 +1100 |
| commit | 14ed2b842f61cfc234a274c5f626d7d8f81e7aa9 (patch) | |
| tree | dbabcfa6cfbd1f16c83753eb5dd746f8954695ea | |
| parent | 5af6acab5ccd0fe2aa1686c502580e984887c62c (diff) | |
| download | skiboot-14ed2b842f61cfc234a274c5f626d7d8f81e7aa9.zip skiboot-14ed2b842f61cfc234a274c5f626d7d8f81e7aa9.tar.gz skiboot-14ed2b842f61cfc234a274c5f626d7d8f81e7aa9.tar.bz2 | |
libfdt: add basic sanity check to fdt_open_into
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
| -rw-r--r-- | libfdt/fdt_rw.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libfdt/fdt_rw.c b/libfdt/fdt_rw.c index 994037b..befe87d 100644 --- a/libfdt/fdt_rw.c +++ b/libfdt/fdt_rw.c @@ -425,6 +425,10 @@ int fdt_open_into(const void *fdt, void *buf, int bufsize) newsize = FDT_ALIGN(sizeof(struct fdt_header), 8) + mem_rsv_size + struct_size + fdt_size_dt_strings(fdt); + /* basic sanity check */ + if (struct_size > bufsize) + return -FDT_ERR_BADSTRUCTURE; + if (bufsize < newsize) return -FDT_ERR_NOSPACE; |