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[src/trunk]: src/sys/dev/usb usbnet: Reject buflen>MCLBYTES in usbnet_newbuf.
details: https://anonhg.NetBSD.org/src/rev/08241194b3be
branches: trunk
changeset: 943209:08241194b3be
user: riastradh <riastradh%NetBSD.org@localhost>
date: Fri Aug 28 17:05:32 2020 +0000
description:
usbnet: Reject buflen>MCLBYTES in usbnet_newbuf.
diffstat:
sys/dev/usb/usbnet.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diffs (28 lines):
diff -r 231e5073f54c -r 08241194b3be sys/dev/usb/usbnet.c
--- a/sys/dev/usb/usbnet.c Fri Aug 28 17:01:48 2020 +0000
+++ b/sys/dev/usb/usbnet.c Fri Aug 28 17:05:32 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: usbnet.c,v 1.38 2020/03/15 23:04:51 thorpej Exp $ */
+/* $NetBSD: usbnet.c,v 1.39 2020/08/28 17:05:32 riastradh Exp $ */
/*
* Copyright (c) 2019 Matthew R. Green
@@ -33,7 +33,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.38 2020/03/15 23:04:51 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usbnet.c,v 1.39 2020/08/28 17:05:32 riastradh Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
@@ -239,6 +239,9 @@
{
struct mbuf *m;
+ if (buflen > MCLBYTES)
+ return NULL;
+
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == NULL)
return NULL;
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