Add length check in Doc::data_len() (#13133)

masaori335 · web-flow · commit e78ed669c8b2 · 2026-06-02T10:46:42.000+09:00
diff --git a/src/iocore/cache/P_CacheDoc.h b/src/iocore/cache/P_CacheDoc.h
@@ -82,6 +82,10 @@ Doc::prefix_len() const
 inline uint32_t
 Doc::data_len() const
 {
+  if (this->len <= sizeof(self_type) + this->hlen) {
+    return 0;
+  }
+
   return this->len - sizeof(self_type) - this->hlen;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -82,6 +82,10 @@ Doc::prefix_len() const`
`82`	`82`	`inline uint32_t`
`83`	`83`	`Doc::data_len() const`
`84`	`84`	`{`
	`85`	`+ if (this->len <= sizeof(self_type) + this->hlen) {`
	`86`	`+ return 0;`
	`87`	`+ }`
	`88`	`+`
`85`	`89`	`return this->len - sizeof(self_type) - this->hlen;`
`86`	`90`	`}`
`87`	`91`