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Squashfs: add missing check in zlib_wrapper
[firefly-linux-kernel-4.4.55.git]
/
fs
/
squashfs
/
zlib_wrapper.c
diff --git
a/fs/squashfs/zlib_wrapper.c
b/fs/squashfs/zlib_wrapper.c
index 1f4833b87ea30677f070ac45d2cc57a5765d57fc..ab5801f66e2670931bc3e6e8fff8704df107beca 100644
(file)
--- a/
fs/squashfs/zlib_wrapper.c
+++ b/
fs/squashfs/zlib_wrapper.c
@@
-127,6
+127,11
@@
static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
goto release_mutex;
}
+ if (k < b) {
+ ERROR("zlib_uncompress error, data remaining\n");
+ goto release_mutex;
+ }
+
length = stream->total_out;
mutex_unlock(&msblk->read_data_mutex);
return length;