linux-kernel - [PATCH] fix memory leak in net/ipv4/tcp_probe.c::tcpprobe

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>] [day] [month] [year] [list]

Message-Id: <200607302138.02855.jesper.juhl@gmail.com>
Date:	Sun, 30 Jul 2006 21:38:02 +0200
From:	Jesper Juhl <jesper.juhl@...il.com>
To:	linux-kernel@...r.kernel.org,
	Stephen Hemminger <shemminger@...l.org>,
	"David S. Miller" <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Pekka Savola <pekkas@...core.fi>,
	Patrick McHardy <kaber@...eworks.de>, netdev@...r.kernel.org
Subject: [PATCH] fix memory leak in net/ipv4/tcp_probe.c::tcpprobe_read()

There's an obvious memory leak in net/ipv4/tcp_probe.c::tcpprobe_read()
We are not freeing 'tbuf' on error.
Patch below fixes that.


Signed-off-by: Jesper Juhl <jesper.juhl@...il.com>
---

 net/ipv4/tcp_probe.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

--- linux-2.6.18-rc3-orig/net/ipv4/tcp_probe.c	2006-07-30 13:21:53.000000000 +0200
+++ linux-2.6.18-rc3/net/ipv4/tcp_probe.c	2006-07-30 21:32:04.000000000 +0200
@@ -129,8 +129,10 @@ static ssize_t tcpprobe_read(struct file
 
 	error = wait_event_interruptible(tcpw.wait,
 					 __kfifo_len(tcpw.fifo) != 0);
-	if (error)
+	if (error) {
+		vfree(tbuf);
 		return error;
+	}
 
 	cnt = kfifo_get(tcpw.fifo, tbuf, len);
 	error = copy_to_user(buf, tbuf, cnt);



-
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/