Patch "ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ksmbd-fix-null-pointer-dereference-in-smb2_get_info_filesystem.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 3ac00a2ab69b34189942afa9e862d5170cdcb018 Mon Sep 17 00:00:00 2001
From: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Date: Wed, 3 May 2023 08:38:33 +0900
Subject: ksmbd: fix NULL pointer dereference in smb2_get_info_filesystem()

From: Namjae Jeon <linkinjeon@xxxxxxxxxx>

commit 3ac00a2ab69b34189942afa9e862d5170cdcb018 upstream.

If share is , share->path is NULL and it cause NULL pointer
dereference issue.

Cc: stable@xxxxxxxxxxxxxxx
Reported-by: zdi-disclosures@xxxxxxxxxxxxxx # ZDI-CAN-20479
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 fs/ksmbd/smb2pdu.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -4913,6 +4913,9 @@ static int smb2_get_info_filesystem(stru
 	int rc = 0, len;
 	int fs_infoclass_size = 0;
 
+	if (!share->path)
+		return -EIO;
+
 	rc = kern_path(share->path, LOOKUP_NO_SYMLINKS, &path);
 	if (rc) {
 		pr_err("cannot create vfs path\n");


Patches currently in stable-queue which might be from linkinjeon@xxxxxxxxxx are

queue-6.1/ksmbd-not-allow-guest-user-on-multichannel.patch
queue-6.1/ksmbd-fix-memleak-in-session-setup.patch
queue-6.1/ksmbd-fix-null-pointer-dereference-in-smb2_get_info_filesystem.patch
queue-6.1/ksmbd-fix-racy-issue-under-cocurrent-smb2-tree-disconnect.patch
queue-6.1/ksmbd-fix-deadlock-in-ksmbd_find_crypto_ctx.patch
queue-6.1/ksmbd-call-rcu_barrier-in-ksmbd_server_exit.patch



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