cifs: Fix uninitialized memory read for smb311 posix symlink create
authorVolker Lendecke <vl@samba.org>
Wed, 11 Jan 2023 11:37:58 +0000 (12:37 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 18 Jan 2023 10:58:14 +0000 (11:58 +0100)
commitd4b7ff9edebc6f7498873493e5b50f50a2ba6d49
treead91a80690ca880aa8fcd4e6d074bfd677a902ed
parentf905e03c8ff65d80c24f42d8b93df3cec5a7ab12
cifs: Fix uninitialized memory read for smb311 posix symlink create

commit a152d05ae4a71d802d50cf9177dba34e8bb09f68 upstream.

If smb311 posix is enabled, we send the intended mode for file
creation in the posix create context. Instead of using what's there on
the stack, create the mfsymlink file with 0644.

Fixes: ce558b0e17f8a ("smb3: Add posix create context for smb3.11 posix mounts")
Cc: stable@vger.kernel.org
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/cifs/link.c