diff options
Diffstat (limited to 'block/qed.c')
| -rw-r--r-- | block/qed.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/block/qed.c b/block/qed.c index 80f18d8..892b13c 100644 --- a/block/qed.c +++ b/block/qed.c @@ -440,6 +440,11 @@ static int bdrv_qed_open(BlockDriverState *bs, QDict *options, int flags, s->l2_mask = s->table_nelems - 1; s->l1_shift = s->l2_shift + ffs(s->table_nelems) - 1; + /* Header size calculation must not overflow uint32_t */ + if (s->header.header_size > UINT32_MAX / s->header.cluster_size) { + return -EINVAL; + } + if ((s->header.features & QED_F_BACKING_FILE)) { if ((uint64_t)s->header.backing_filename_offset + s->header.backing_filename_size > |