pthru32->dataxferlen comes from the user so we need to check that it's
not too large so we don't overflow the buffer.
Reported-by: Nico Golde <n...@ngolde.de>
Reported-by: Fabian Yamaguchi <f...@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
Please review this carefully because I have not tested it.
diff --git a/drivers/scsi/megaraid/megaraid_mm.c
b/drivers/scsi/megaraid/megaraid_mm.c
index dfffd0f..a706927 100644
--- a/drivers/scsi/megaraid/megaraid_mm.c
+++ b/drivers/scsi/megaraid/megaraid_mm.c
@@ -486,6 +486,8 @@ mimd_to_kioc(mimd_t __user *umimd, mraid_mmadp_t *adp,
uioc_t *kioc)
pthru32->dataxferaddr = kioc->buf_paddr;
if (kioc->data_dir & UIOC_WR) {
+ if (pthru32->dataxferlen > kioc->xferlen)
+ return -EINVAL;
if (copy_from_user(kioc->buf_vaddr, kioc->user_data,
pthru32->dataxferlen)) {
return (-EFAULT);
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
