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Diffstat (limited to 'source3/smbd/reply.c')
-rw-r--r--source3/smbd/reply.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c
index 4134df221e..41c6dcb143 100644
--- a/source3/smbd/reply.c
+++ b/source3/smbd/reply.c
@@ -2545,7 +2545,7 @@ int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int leng
size_t numtowrite = SVAL(inbuf,smb_vwv10);
BOOL write_through = BITSETW(inbuf+smb_vwv7,0);
ssize_t nwritten = -1;
- int smb_doff = SVAL(inbuf,smb_vwv11);
+ unsigned int smb_doff = SVAL(inbuf,smb_vwv11);
char *data;
/* If it's an IPC, pass off the pipe handler. */
@@ -2556,6 +2556,9 @@ int reply_write_and_X(connection_struct *conn, char *inbuf,char *outbuf,int leng
CHECK_WRITE(fsp);
CHECK_ERROR(fsp);
+ if(smb_doff > smb_len(inbuf))
+ return(ERROR(ERRDOS,ERRbadmem));
+
data = smb_base(inbuf) + smb_doff;
if(CVAL(inbuf,smb_wct) == 14) {