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| author | Chih-Yen Chang <cc85nod@gmail.com> | 2023-05-06 00:03:54 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-24 17:30:21 +0100 |
| commit | 778aae5a513ea09aa5addfa352bd70a5b71dda85 (patch) | |
| tree | 904d197ef1b43a858c74a9442266af35164389d4 | |
| parent | 69e576f03e2e4c41402d1673a96b0cdad25240e2 (diff) | |
| download | linux-stable-778aae5a513ea09aa5addfa352bd70a5b71dda85.tar.gz linux-stable-778aae5a513ea09aa5addfa352bd70a5b71dda85.tar.bz2 linux-stable-778aae5a513ea09aa5addfa352bd70a5b71dda85.zip | |
ksmbd: allocate one more byte for implied bcc[0]
commit 443d61d1fa9faa60ef925513d83742902390100f upstream.
ksmbd_smb2_check_message allows client to return one byte more, so we
need to allocate additional memory in ksmbd_conn_handler_loop to avoid
out-of-bound access.
Cc: stable@vger.kernel.org
Signed-off-by: Chih-Yen Chang <cc85nod@gmail.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/ksmbd/connection.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ksmbd/connection.c b/fs/ksmbd/connection.c index 4ed379f9b1aa..4882a812ea86 100644 --- a/fs/ksmbd/connection.c +++ b/fs/ksmbd/connection.c @@ -351,7 +351,8 @@ int ksmbd_conn_handler_loop(void *p) break; /* 4 for rfc1002 length field */ - size = pdu_size + 4; + /* 1 for implied bcc[0] */ + size = pdu_size + 4 + 1; conn->request_buf = kvmalloc(size, GFP_KERNEL); if (!conn->request_buf) break; |