diff -up cups-1.4.2/backend/network.c.negative-snmp-string-length cups-1.4.2/backend/network.c

--- cups-1.4.2/backend/network.c.negative-snmp-string-length	2009-08-31 19:45:43.000000000 +0100

+++ cups-1.4.2/backend/network.c	2009-12-08 11:14:45.010363459 +0000

@@ -170,9 +170,13 @@ backendNetworkSideCB(

 	        case CUPS_ASN1_BIT_STRING :

 	        case CUPS_ASN1_OCTET_STRING :

-		    i = (int)(sizeof(data) - (dataptr - data));

-		    if (packet.object_value.string.num_bytes < i)

+		    if (packet.object_value.string.num_bytes < 0)

+		      i = 0;

+		    else if (packet.object_value.string.num_bytes < 

+			     (sizeof(data) - (dataptr - data)))

 		      i = packet.object_value.string.num_bytes;

+		    else

+		      i = (int)(sizeof(data) - (dataptr - data));

 		    memcpy(dataptr, packet.object_value.string.bytes, i);

diff -up cups-1.4.2/backend/snmp-supplies.c.negative-snmp-string-length cups-1.4.2/backend/snmp-supplies.c

--- cups-1.4.2/backend/snmp-supplies.c.negative-snmp-string-length	2009-08-31 17:34:06.000000000 +0100

+++ cups-1.4.2/backend/snmp-supplies.c	2009-12-08 11:15:05.505362685 +0000

@@ -232,6 +232,8 @@ backendSNMPSupplies(

     if (packet.object_value.string.num_bytes == 2)

       new_state = (packet.object_value.string.bytes[0] << 8) |

 		  packet.object_value.string.bytes[1];

+    else if (packet.object_value.string.num_bytes == 1)

+      new_state = (packet.object_value.string.bytes[0] << 8);

     else

       new_state = 0;