Hi! Attached find a patch that fixes an uninitialized memory read when creating symlinks using the smb311 posix extensions. Volker
From 482fa85ef97505626b6b146155834e6bc36012fa Mon Sep 17 00:00:00 2001 From: Volker Lendecke <vl@xxxxxxxxx> Date: Wed, 11 Jan 2023 12:37:58 +0100 Subject: [PATCH] cifs: Fix uninitialized memory read for smb311 posix symlink create 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. Signed-off-by: Volker Lendecke <vl@xxxxxxxxx> --- fs/cifs/link.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/cifs/link.c b/fs/cifs/link.c index bd374feeccaa..a5a097a69983 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -428,6 +428,7 @@ smb3_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, oparms.disposition = FILE_CREATE; oparms.fid = &fid; oparms.reconnect = false; + oparms.mode = 0644; rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL, NULL); -- 2.30.2
