diff options
| -rw-r--r-- | drivers/target/iscsi/iscsi_target.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index 9a4f8957725b..bc743d2a71a2 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -904,7 +904,14 @@ static int iscsit_map_iovec( /* * We know each entry in t_data_sg contains a page. */ - sg = &cmd->se_cmd.t_data_sg[data_offset / PAGE_SIZE]; + u32 ent = data_offset / PAGE_SIZE; + + if (ent >= cmd->se_cmd.t_data_nents) { + pr_err("Initial page entry out-of-bounds\n"); + return -1; + } + + sg = &cmd->se_cmd.t_data_sg[ent]; page_off = (data_offset % PAGE_SIZE); cmd->first_data_sg = sg; |