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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 17:32:50 +0100 |
| commit | af7335a4b946f9f6f9d98398cbcea15cd9850409 (patch) | |
| tree | 18ba7043e4c08ace15de4001294bc45feb19973d /fs/ksmbd | |
| parent | f1d013b0f0f07264229b54ae64003315837a0fcd (diff) | |
| download | linux-af7335a4b946f9f6f9d98398cbcea15cd9850409.tar.gz | |
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>
Diffstat (limited to 'fs/ksmbd')
| -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 e3312fbf4c09..b371754540f9 100644 --- a/fs/ksmbd/connection.c +++ b/fs/ksmbd/connection.c @@ -353,7 +353,8 @@ 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; |