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| author | Rafał Miłecki <zajec5@gmail.com> | 2015-04-22 19:07:19 +0000 |
|---|---|---|
| committer | Rafał Miłecki <zajec5@gmail.com> | 2015-04-22 19:07:19 +0000 |
| commit | 41b471d235b87c7d3bd1e7e91063b3b8fc6dd52e (patch) | |
| tree | ac9041994b160edbbee6e38e210fc297a33942b1 | |
| parent | 41ba634460d69ea879b66c18255bc1d67769196e (diff) | |
| download | upstream-41b471d235b87c7d3bd1e7e91063b3b8fc6dd52e.tar.gz upstream-41b471d235b87c7d3bd1e7e91063b3b8fc6dd52e.tar.bz2 upstream-41b471d235b87c7d3bd1e7e91063b3b8fc6dd52e.zip | |
nvram: refuse to open NVRAM for writing if it's too big to be handled
Otherwise writing anything will result in loosing data.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45565 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -rw-r--r-- | package/utils/nvram/src/nvram.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/package/utils/nvram/src/nvram.c b/package/utils/nvram/src/nvram.c index f2c79ff7ba..0e1c726837 100644 --- a/package/utils/nvram/src/nvram.c +++ b/package/utils/nvram/src/nvram.c @@ -389,8 +389,8 @@ nvram_handle_t * nvram_open(const char *file, int rdonly) header = nvram_header(h); - if( header->magic == NVRAM_MAGIC ) - { + if (header->magic == NVRAM_MAGIC && + (rdonly || header->len < NVRAM_SPACE)) { _nvram_rehash(h); free(mtd); return h; |