linux-kernel - [2.6 patch] dvb_frontend_ioctl(): fix check-after-use

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]

Date:	Tue, 31 Jul 2007 00:28:17 +0200
From:	Adrian Bunk <bunk@...sta.de>
To:	v4l-dvb-maintainer@...uxtv.org
Cc:	linux-kernel@...r.kernel.org
Subject: [2.6 patch] dvb_frontend_ioctl(): fix check-after-use

The Coverity checker spotted that we have already oops'ed if "fe" was NULL.

Since "fe" being NULL seems impossible at this point this patch removes 
the NULL check.

Signed-off-by: Adrian Bunk <bunk@...sta.de>

---
--- linux-2.6.23-rc1-mm1/drivers/media/dvb/dvb-core/dvb_frontend.c.old	2007-07-29 21:41:56.000000000 +0200
+++ linux-2.6.23-rc1-mm1/drivers/media/dvb/dvb-core/dvb_frontend.c	2007-07-29 21:42:16.000000000 +0200
@@ -706,11 +706,11 @@ static int dvb_frontend_ioctl(struct ino
 	struct dvb_frontend_private *fepriv = fe->frontend_priv;
 	int err = -EOPNOTSUPP;
 
 	dprintk ("%s\n", __FUNCTION__);
 
-	if (!fe || fepriv->exit)
+	if (fepriv->exit)
 		return -ENODEV;
 
 	if ((file->f_flags & O_ACCMODE) == O_RDONLY &&
 	    (_IOC_DIR(cmd) != _IOC_READ || cmd == FE_GET_EVENT ||
 	     cmd == FE_DISEQC_RECV_SLAVE_REPLY))

-
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/