Author: np
Date: Wed Mar 21 20:13:24 2018
New Revision: 331320
URL: https://svnweb.freebsd.org/changeset/base/331320
Log:
MFC r328315:
cxgb(4): Validate offset/len in the GET_EEPROM ioctl.
Sponsored by: Chelsio Communications.
Modified:
stable/10/sys/dev/cxgb/cxgb_main.c
Modified: stable/10/sys/dev/cxgb/cxgb_main.c
==============================================================================
--- stable/10/sys/dev/cxgb/cxgb_main.c Wed Mar 21 19:33:00 2018
(r331319)
+++ stable/10/sys/dev/cxgb/cxgb_main.c Wed Mar 21 20:13:24 2018
(r331320)
@@ -2914,8 +2914,14 @@ cxgb_extension_ioctl(struct cdev *dev, unsigned long c
case CHELSIO_GET_EEPROM: {
int i;
struct ch_eeprom *e = (struct ch_eeprom *)data;
- uint8_t *buf = malloc(EEPROMSIZE, M_DEVBUF, M_NOWAIT);
+ uint8_t *buf;
+ if (e->offset & 3 || e->offset >= EEPROMSIZE ||
+ e->len > EEPROMSIZE || e->offset + e->len > EEPROMSIZE) {
+ return (EINVAL);
+ }
+
+ buf = malloc(EEPROMSIZE, M_DEVBUF, M_NOWAIT);
if (buf == NULL) {
return (ENOMEM);
}
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