diff options
Diffstat (limited to 'fs/ksmbd/smb2misc.c')
| -rw-r--r-- | fs/ksmbd/smb2misc.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/fs/ksmbd/smb2misc.c b/fs/ksmbd/smb2misc.c index a717aa9b4af8..fbdde426dd01 100644 --- a/fs/ksmbd/smb2misc.c +++ b/fs/ksmbd/smb2misc.c @@ -408,20 +408,19 @@ int ksmbd_smb2_check_message(struct ksmbd_work *work) goto validate_credit; /* - * windows client also pad up to 8 bytes when compounding. - * If pad is longer than eight bytes, log the server behavior - * (once), since may indicate a problem but allow it and - * continue since the frame is parseable. + * SMB2 NEGOTIATE request will be validated when message + * handling proceeds. */ - if (clc_len < len) { - ksmbd_debug(SMB, - "cli req padded more than expected. Length %d not %d for cmd:%d mid:%llu\n", - len, clc_len, command, - le64_to_cpu(hdr->MessageId)); + if (command == SMB2_NEGOTIATE_HE) + goto validate_credit; + + /* + * Allow a message that padded to 8byte boundary. + */ + if (clc_len < len && (len - clc_len) < 8) goto validate_credit; - } - ksmbd_debug(SMB, + pr_err_ratelimited( "cli req too short, len %d not %d. cmd:%d mid:%llu\n", len, clc_len, command, le64_to_cpu(hdr->MessageId)); |