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:   Mon, 15 Apr 2019 10:26:24 -0500
From:   Wenwen Wang <>
To:     Wenwen Wang <>
Cc:     Jan Kara <>, (open list)
Subject: [PATCH] udf: fix an uninitialized read bug

In udf_lookup(), the pointer 'fi' is a local variable initialized by the
return value of the function call udf_find_entry(). However, if the macro
'UDF_RECOVERY' is defined, this variable will become uninitialized if the
else branch is not taken, which can potentially cause incorrect results in
the following execution.

This patch simply initializes this local pointer to NULL.

Signed-off-by: Wenwen Wang <>
 fs/udf/namei.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 58cc241..9d499e1 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -299,7 +299,7 @@ static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry,
 	struct inode *inode = NULL;
 	struct fileIdentDesc cfi;
 	struct udf_fileident_bh fibh;
-	struct fileIdentDesc *fi;
+	struct fileIdentDesc *fi = NULL;
 	if (dentry->d_name.len > UDF_NAME_LEN)

Powered by blists - more mailing lists