[SCSI] esas2r: smatch - Fix overrun due to sprintf appending NULL
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bradley Grove <bgrove@attotech.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/esas2r/esas2r_vda.c b/drivers/scsi/esas2r/esas2r_vda.c
index f8ec6d6..fd13928 100644
--- a/drivers/scsi/esas2r/esas2r_vda.c
+++ b/drivers/scsi/esas2r/esas2r_vda.c
@@ -302,6 +302,7 @@
if (vi->cmd.cfg.cfg_func == VDA_CFG_GET_INIT) {
struct atto_ioctl_vda_cfg_cmd *cfg = &vi->cmd.cfg;
struct atto_vda_cfg_rsp *rsp = &rq->func_rsp.cfg_rsp;
+ char buf[sizeof(cfg->data.init.fw_release) + 1];
cfg->data_length =
cpu_to_le32(sizeof(struct atto_vda_cfg_init));
@@ -309,11 +310,13 @@
le32_to_cpu(rsp->vda_version);
cfg->data.init.fw_build = rsp->fw_build;
- sprintf((char *)&cfg->data.init.fw_release,
- "%1d.%02d",
+ snprintf(buf, sizeof(buf), "%1d.%02d",
(int)LOBYTE(le16_to_cpu(rsp->fw_release)),
(int)HIBYTE(le16_to_cpu(rsp->fw_release)));
+ memcpy(&cfg->data.init.fw_release, buf,
+ sizeof(cfg->data.init.fw_release));
+
if (LOWORD(LOBYTE(cfg->data.init.fw_build)) == 'A')
cfg->data.init.fw_version =
cfg->data.init.fw_build;