linux-kernel - [PATCH] taskstats: fix? sk

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20061029132449.GA1142@oleg>
Date:	Sun, 29 Oct 2006 16:24:49 +0300
From:	Oleg Nesterov <oleg@...sign.ru>
To:	Andrew Morton <akpm@...l.org>
Cc:	Thomas Graf <tgraf@...g.ch>, Shailabh Nagar <nagar@...son.ibm.com>,
	Balbir Singh <balbir@...ibm.com>, Jay Lan <jlan@....com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] taskstats: fix? sk_buff leak

Compile tested only, and I know nothing about net/. Needs an ack from
maintainer.

'return genlmsg_cancel()' in taskstats_user_cmd/taskstats_exit_send looks
wrong to me. Unless we pass 'rep_skb' to the netlink layer we own sk_buff,
yes? This means we should always do kfree_skb() on failure.

Signed-off-by: Oleg Nesterov <oleg@...sign.ru>

--- STATS/kernel/taskstats.c~1_skb	2006-10-29 15:12:51.000000000 +0300
+++ STATS/kernel/taskstats.c	2006-10-29 16:16:05.000000000 +0300
@@ -411,7 +411,7 @@ static int taskstats_user_cmd(struct sk_
 	return send_reply(rep_skb, info->snd_pid);
 
 nla_put_failure:
-	return genlmsg_cancel(rep_skb, reply);
+	genlmsg_cancel(rep_skb, reply);
 err:
 	nlmsg_free(rep_skb);
 	return rc;
@@ -507,7 +507,6 @@ send:
 
 nla_put_failure:
 	genlmsg_cancel(rep_skb, reply);
-	goto ret;
 err_skb:
 	nlmsg_free(rep_skb);
 ret:

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/