From: Ralph Boehme <slow@samba.org>
Date: Mon, 14 Dec 2020 14:53:11 +0000 (+0100)
Subject: smbd: check for absolute paths in full_path_from_dirfsp_atname()
X-Git-Tag: samba-4.14.0rc1~197
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=c3fb27d92b82241183ae811e5ee7ca90e53b7284;p=thirdparty%2Fsamba.git

smbd: check for absolute paths in full_path_from_dirfsp_atname()

If the "atname" is an absolute path we can ignore the dirfsp and just return a
copy of the atname.

Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
---

diff --git a/source3/smbd/filename.c b/source3/smbd/filename.c
index 748d1effc16..184a293f205 100644
--- a/source3/smbd/filename.c
+++ b/source3/smbd/filename.c
@@ -2068,7 +2068,8 @@ struct smb_filename *full_path_from_dirfsp_atname(
 	char *path = NULL;
 
 	if (dirfsp == dirfsp->conn->cwd_fsp ||
-	    ISDOT(dirfsp->fsp_name->base_name))
+	    ISDOT(dirfsp->fsp_name->base_name) ||
+	    atname->base_name[0] == '/')
 	{
 		path = talloc_strdup(mem_ctx, atname->base_name);
 	} else {