linux-kernel - Re: [PATCHv3 2/3]posix_acl: add the pointer check into fs/posix

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

Message-ID: <b3657a100912280701s7b1420bdkac8d3d90291639ae@mail.gmail.com>
Date:	Mon, 28 Dec 2009 23:01:27 +0800
From:	liu weni <qingshenlwy@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	viro <viro@...iv.linux.org.uk>
Subject: Re: [PATCHv3 2/3]posix_acl: add the pointer check into fs/posix_acl.c

Add two acl pointer checks before this function.

---

Signed-off-by: Liuwenyi <qingshenlwy@...il.com>
CC: Alexander Viro <viro@...iv.linux.org.uk>
Cc: linux-fsdevel@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 39df95a..0d2a7a2 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -150,6 +150,12 @@ posix_acl_equiv_mode(const struct posix_acl *acl,
mode_t *mode_p)
 	mode_t mode = 0;
 	int not_equiv = 0;

+	if (!acl)
+		return -EINVAL;
+
+	if (IS_ERR(acl))
+		return PTR_ERR(acl);
+
 	FOREACH_ACL_ENTRY(pa, acl, pe) {
 		switch (pa->e_tag) {
 			case ACL_USER_OBJ:
--
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/