FAILED: patch "[PATCH] smb: client: Don't log plaintext credentials in" failed to apply to 5.15-stable tree

FAILED: patch "[PATCH] smb: client: Don't log plaintext credentials in" failed to apply to 5.15-stable tree

[gregkh]

The patch below does not apply to the 5.15-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y
git checkout FETCH_HEAD
git cherry-pick -x 2f37dc436d4e61ff7ae0b0353cf91b8c10396e4d
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026030914-pellet-condone-8fe6@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 2f37dc436d4e61ff7ae0b0353cf91b8c10396e4d Mon Sep 17 00:00:00 2001
From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Thu, 26 Feb 2026 22:28:45 +0100
Subject: [PATCH] smb: client: Don't log plaintext credentials in
 cifs_set_cifscreds

When debug logging is enabled, cifs_set_cifscreds() logs the key
payload and exposes the plaintext username and password. Remove the
debug log to avoid exposing credentials.

Fixes: 8a8798a5ff90 ("cifs: fetch credentials out of keyring for non-krb5 auth multiuser mounts")
Cc: stable@vger.kernel.org
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Steve French <stfrench@microsoft.com>

diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index 87686c804057..4c34d9603e05 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -2236,7 +2236,6 @@ cifs_set_cifscreds(struct smb3_fs_context *ctx, struct cifs_ses *ses)
 	/* find first : in payload */
 	payload = upayload->data;
 	delim = strnchr(payload, upayload->datalen, ':');
-	cifs_dbg(FYI, "payload=%s\n", payload);
 	if (!delim) {
 		cifs_dbg(FYI, "Unable to find ':' in payload (datalen=%d)\n",
 			 upayload->datalen);

[PATCH 5.15.y] smb: client: Don't log plaintext credentials in cifs_set_cifscreds

[Sasha Levin]

From: Thorsten Blum <thorsten.blum@linux.dev>

[ Upstream commit 2f37dc436d4e61ff7ae0b0353cf91b8c10396e4d ]

When debug logging is enabled, cifs_set_cifscreds() logs the key
payload and exposes the plaintext username and password. Remove the
debug log to avoid exposing credentials.

Fixes: 8a8798a5ff90 ("cifs: fetch credentials out of keyring for non-krb5 auth multiuser mounts")
Cc: stable@vger.kernel.org
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.org>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/connect.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 677c757fffffb..098a2ad8cec4e 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1874,7 +1874,6 @@ cifs_set_cifscreds(struct smb3_fs_context *ctx, struct cifs_ses *ses)
 	/* find first : in payload */
 	payload = upayload->data;
 	delim = strnchr(payload, upayload->datalen, ':');
-	cifs_dbg(FYI, "payload=%s\n", payload);
 	if (!delim) {
 		cifs_dbg(FYI, "Unable to find ':' in payload (datalen=%d)\n",
 			 upayload->datalen);
-- 
2.51.0