CVS commit: [netbsd-7] src/sys/dev/ic

[Soren Jacobsen]

Module Name:    src
Committed By:   snj
Date:           Sat Aug 12 04:29:22 UTC 2017

Modified Files:
        src/sys/dev/ic [netbsd-7]: ciss.c

Log Message:
Pull up following revision(s) (requested by mrg in ticket #1483):
        sys/dev/ic/ciss.c: revision 1.37
Reject negative indices from userland.


To generate a diff of this commit:
cvs rdiff -u -r1.32 -r1.32.4.1 src/sys/dev/ic/ciss.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.


Modified files:

Index: src/sys/dev/ic/ciss.c
diff -u src/sys/dev/ic/ciss.c:1.32 src/sys/dev/ic/ciss.c:1.32.4.1
--- src/sys/dev/ic/ciss.c:1.32	Thu Oct 17 21:24:24 2013
+++ src/sys/dev/ic/ciss.c	Sat Aug 12 04:29:22 2017
@@ -1,4 +1,4 @@
-/*	$NetBSD: ciss.c,v 1.32 2013/10/17 21:24:24 christos Exp $	*/
+/*	$NetBSD: ciss.c,v 1.32.4.1 2017/08/12 04:29:22 snj Exp $	*/
 /*	$OpenBSD: ciss.c,v 1.68 2013/05/30 16:15:02 deraadt Exp $	*/
 
 /*
@@ -19,7 +19,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ciss.c,v 1.32 2013/10/17 21:24:24 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ciss.c,v 1.32.4.1 2017/08/12 04:29:22 snj Exp $");
 
 #include "bio.h"
 
@@ -1274,12 +1274,12 @@ ciss_ioctl(device_t dev, u_long cmd, voi
 		/* FALLTHROUGH */
 	case BIOCDISK:
 		bd = (struct bioc_disk *)addr;
-		if (bd->bd_volid > sc->maxunits) {
+		if (bd->bd_volid < 0 || bd->bd_volid > sc->maxunits) {
 			error = EINVAL;
 			break;
 		}
 		ldp = sc->sc_lds[0];
-		if (!ldp || (pd = bd->bd_diskid) > ldp->ndrives) {
+		if (!ldp || (pd = bd->bd_diskid) < 0 || pd > ldp->ndrives) {
 			error = EINVAL;
 			break;
 		}
@@ -1380,7 +1380,7 @@ ciss_ioctl_vol(struct ciss_softc *sc, st
 	int error = 0;
 	u_int blks;
 
-	if (bv->bv_volid > sc->maxunits) {
+	if (bv->bv_volid < 0 || bv->bv_volid > sc->maxunits) {
 		return EINVAL;
 	}
 	ldp = sc->sc_lds[bv->bv_volid];