diff options
| -rw-r--r-- | block/qcow2.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 056525c7fd..470734be9f 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -1986,6 +1986,10 @@ static int qcow2_change_backing_file(BlockDriverState *bs, { BDRVQcow2State *s = bs->opaque; + if (backing_file && strlen(backing_file) > 1023) { + return -EINVAL; + } + pstrcpy(bs->backing_file, sizeof(bs->backing_file), backing_file ?: ""); pstrcpy(bs->backing_format, sizeof(bs->backing_format), backing_fmt ?: ""); |