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ksmbd: fix uninitialized pointer read in ksmbd_vfs_rename()

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[ Upstream commit 48b47f0caa ]

Uninitialized rd.delegated_inode can be used in vfs_rename().
Fix this by setting rd.delegated_inode to NULL to avoid the uninitialized
read.

Fixes: 74d7970feb ("ksmbd: fix racy issue from using ->d_parent and ->d_name")
Reported-by: Coverity Scan <scan-admin@coverity.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Namjae Jeon
2023-12-31 16:12:38 +09:00
committed by Greg Kroah-Hartman
parent 6927ffe747
commit 6d4e21e369
1 changed files with 1 additions and 0 deletions
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fs/smb/server/vfs.c
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@@ -744,6 +744,7 @@ retry:
rd.new_dir = new_path.dentry->d_inode, rd.new_dir = new_path.dentry->d_inode,
rd.new_dentry = new_dentry, rd.new_dentry = new_dentry,
rd.flags = flags, rd.flags = flags,
rd.delegated_inode = NULL,
err = vfs_rename(&rd); err = vfs_rename(&rd);
if (err) if (err)
ksmbd_debug(VFS, "vfs_rename failed err %d\n", err); ksmbd_debug(VFS, "vfs_rename failed err %d\n", err);