Verify if chunk exists before access it

Felipe Zimmerle · Felipe Zimmerle · commit 934a9fcc02ba · 2017-10-05T13:28:28.000Z
diff --git a/apache2/apache2_io.c b/apache2/apache2_io.c
@@ -85,7 +85,7 @@ apr_status_t input_filter(ap_filter_t *f, apr_bucket_brigade *bb_out,
         return APR_EGENERAL;
     }
 
-    if (chunk->length > 0) {
+    if (chunk && chunk->length > 0) {
         if (chunk && (!msr->txcfg->stream_inbody_inspection || (msr->txcfg->stream_inbody_inspection && msr->if_stream_changed == 0))) {
             /* Copy the data we received in the chunk */
             bucket = apr_bucket_heap_create(chunk->data, chunk->length, NULL,

Original file line number	Diff line number	Diff line change
`@@ -85,7 +85,7 @@ apr_status_t input_filter(ap_filter_t f, apr_bucket_brigade bb_out,`
`85`	`85`	`return APR_EGENERAL;`
`86`	`86`	`}`
`87`	`87`
`88`		`- if (chunk->length > 0) {`
	`88`	`+ if (chunk && chunk->length > 0) {`
`89`	`89`	`if (chunk && (!msr->txcfg->stream_inbody_inspection \|\| (msr->txcfg->stream_inbody_inspection && msr->if_stream_changed == 0))) {`
`90`	`90`	`/* Copy the data we received in the chunk */`
`91`	`91`	`bucket = apr_bucket_heap_create(chunk->data, chunk->length, NULL,`