This is a note to let you know that I've just added the patch titled
ksmbd: override fsids for smb2_query_info()
to the 6.6-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-override-fsids-for-smb2_query_info.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 137c8b0d0c382fc269def4e913305eff86d7c6c9
Author: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Date: Mon Aug 5 08:57:03 2024 +0900
ksmbd: override fsids for smb2_query_info()
[ Upstream commit f6bd41280a44dcc2e0a25ed72617d25f586974a7 ]
Sangsoo reported that a DAC denial error occurred when accessing
files through the ksmbd thread. This patch override fsids for
smb2_query_info().
Reported-by: Sangsoo Lee <constant.lee@xxxxxxxxxxx>
Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c
index 4ac6068c50cc..c527050bc981 100644
--- a/fs/smb/server/smb2pdu.c
+++ b/fs/smb/server/smb2pdu.c
@@ -5601,6 +5601,11 @@ int smb2_query_info(struct ksmbd_work *work)
ksmbd_debug(SMB, "GOT query info request\n");
+ if (ksmbd_override_fsids(work)) {
+ rc = -ENOMEM;
+ goto err_out;
+ }
+
switch (req->InfoType) {
case SMB2_O_INFO_FILE:
ksmbd_debug(SMB, "GOT SMB2_O_INFO_FILE\n");
@@ -5619,6 +5624,7 @@ int smb2_query_info(struct ksmbd_work *work)
req->InfoType);
rc = -EOPNOTSUPP;
}
+ ksmbd_revert_fsids(work);
if (!rc) {
rsp->StructureSize = cpu_to_le16(9);
@@ -5628,6 +5634,7 @@ int smb2_query_info(struct ksmbd_work *work)
le32_to_cpu(rsp->OutputBufferLength));
}
+err_out:
if (rc < 0) {
if (rc == -EACCES)
rsp->hdr.Status = STATUS_ACCESS_DENIED;
