diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2023-04-20 16:27:33 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-04-20 16:29:51 -0700 |
| commit | 681c5b51dc6b8ff1ec05555243eccf64a08cb2fd (patch) | |
| tree | 713e0523bc617cbda9ff930568dd2341907b87b8 /fs/ksmbd/smb2pdu.c | |
| parent | e315e7b83a22043bffee450437d7089ef373cbf6 (diff) | |
| parent | 0f2a4af27b649c13ba76431552fe49c60120d0f6 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Adjacent changes:
net/mptcp/protocol.h
63740448a32e ("mptcp: fix accept vs worker race")
2a6a870e44dd ("mptcp: stops worker on unaccepted sockets at listener close")
ddb1a072f858 ("mptcp: move first subflow allocation at mpc access time")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'fs/ksmbd/smb2pdu.c')
| -rw-r--r-- | fs/ksmbd/smb2pdu.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index 8af939a181be..67b7e766a06b 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -876,17 +876,21 @@ static void assemble_neg_contexts(struct ksmbd_conn *conn, } static __le32 decode_preauth_ctxt(struct ksmbd_conn *conn, - struct smb2_preauth_neg_context *pneg_ctxt) + struct smb2_preauth_neg_context *pneg_ctxt, + int len_of_ctxts) { - __le32 err = STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP; + /* + * sizeof(smb2_preauth_neg_context) assumes SMB311_SALT_SIZE Salt, + * which may not be present. Only check for used HashAlgorithms[1]. + */ + if (len_of_ctxts < MIN_PREAUTH_CTXT_DATA_LEN) + return STATUS_INVALID_PARAMETER; - if (pneg_ctxt->HashAlgorithms == SMB2_PREAUTH_INTEGRITY_SHA512) { - conn->preauth_info->Preauth_HashId = - SMB2_PREAUTH_INTEGRITY_SHA512; - err = STATUS_SUCCESS; - } + if (pneg_ctxt->HashAlgorithms != SMB2_PREAUTH_INTEGRITY_SHA512) + return STATUS_NO_PREAUTH_INTEGRITY_HASH_OVERLAP; - return err; + conn->preauth_info->Preauth_HashId = SMB2_PREAUTH_INTEGRITY_SHA512; + return STATUS_SUCCESS; } static void decode_encrypt_ctxt(struct ksmbd_conn *conn, @@ -1014,7 +1018,8 @@ static __le32 deassemble_neg_contexts(struct ksmbd_conn *conn, break; status = decode_preauth_ctxt(conn, - (struct smb2_preauth_neg_context *)pctx); + (struct smb2_preauth_neg_context *)pctx, + len_of_ctxts); if (status != STATUS_SUCCESS) break; } else if (pctx->ContextType == SMB2_ENCRYPTION_CAPABILITIES) { |