From: Loganaden Velvindron <logan@elandsys.com>
To: netdev@vger.kernel.org
Subject: [PATCH net-next] use vzalloc() instead of vmalloc() as counterstmp is not cleared before it is used in get_counters(). counterstmp might be leaked partially when it is sent to userland later on.
Date: Wed, 28 Oct 2015 08:54:20 -0700 [thread overview]
Message-ID: <20151028155420.GA21173@mx.elandsys.com> (raw)
---
net/bridge/netfilter/ebtables.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index f46ca41..26922e9 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -989,7 +989,7 @@ static int do_replace_finish(struct net *net, struct ebt_replace *repl,
the check on the size is done later, when we have the lock */
if (repl->num_counters) {
unsigned long size = repl->num_counters * sizeof(*counterstmp);
- counterstmp = vmalloc(size);
+ counterstmp = vzalloc(size);
if (!counterstmp)
return -ENOMEM;
}
@@ -1410,7 +1410,7 @@ static int copy_counters_to_user(struct ebt_table *t,
return -EINVAL;
}
- counterstmp = vmalloc(nentries * sizeof(*counterstmp));
+ counterstmp = vzalloc(nentries * sizeof(*counterstmp));
if (!counterstmp)
return -ENOMEM;
--
2.6.1
reply other threads:[~2015-10-28 16:00 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20151028155420.GA21173@mx.elandsys.com \
--to=logan@elandsys.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).