2021년 11월 24일 (수) 오후 1:46, Namjae Jeon <linkinjeon@xxxxxxxxxx>님이 작성:
>
> Fix memleak in get_file_stream_info()
>
> Fixes: 34061d6b76a4 ("ksmbd: validate OutputBufferLength of QUERY_DIR, QUERY_INFO, IOCTL requests")
> Cc: stable@xxxxxxxxxxxxxxx # v5.15
> Reported-by: Coverity Scan <scan-admin@xxxxxxxxxxxx>
> Signed-off-by: Namjae Jeon <linkinjeon@xxxxxxxxxx>
> ---
Acked-by: Hyunchul Lee <hyc.lee@xxxxxxxxx>
> fs/ksmbd/smb2pdu.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
> index 2067d5bab1b0..c70972b49da8 100644
> --- a/fs/ksmbd/smb2pdu.c
> +++ b/fs/ksmbd/smb2pdu.c
> @@ -4496,8 +4496,10 @@ static void get_file_stream_info(struct ksmbd_work *work,
> ":%s", &stream_name[XATTR_NAME_STREAM_LEN]);
>
> next = sizeof(struct smb2_file_stream_info) + streamlen * 2;
> - if (next > buf_free_len)
> + if (next > buf_free_len) {
> + kfree(stream_buf);
> break;
> + }
>
> file_info = (struct smb2_file_stream_info *)&rsp->Buffer[nbytes];
> streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
> --
> 2.25.1
>
--
Thanks,
Hyunchul
